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One Step Equations – Add and Subtract
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Question 1 of 21
1. Question
Solve`m+9=27`- `m=` (18)
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Inverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `m`, it needs to be alone on one side.Move `9` to the other side by subtracting `9` from both sides of the equation.`m` `+9` `=` `27` `m` `+9` `-9` `=` `27` `-9` `m` `=` `18` `9-9` cancels out Check our workTo confirm our answer, substitute `m=18` to the original equation.`m+9` `=` `27` `18+9` `=` `27` Substitute `m=18` `27` `=` `27` Since the equation is true, the answer is correct.`m=18`Hint
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Question 2 of 21
2. Question
Solve`x+11=16`- `x=` (5)
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Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `x`, it needs to be alone on one side.Move `11` to the other side by subtracting `11` from both sides of the equation.`x` `+11` `=` `16` `x` `+11` `-11` `=` `16` `-11` `x` `=` `5` `11-11` cancels out Check our workTo confirm our answer, substitute `x=5` to the original equation.`x+11` `=` `16` `5+11` `=` `16` Substitute `x=5` `16` `=` `16` Since the equation is true, the answer is correct.`x=5`Hint
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Question 3 of 21
3. Question
Solve`7+y=20`- `y=` (13)
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Excellent!
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Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `y`, it needs to be alone on one side.Move `7` to the other side by subtracting `7` from both sides of the equation.`7+` `y` `=` `20` `7+` `y` `-7` `=` `20` `-7` `y` `=` `13` `7-7` cancels out Check our workTo confirm our answer, substitute `y=13` to the original equation.`7+y` `=` `20` `7+13` `=` `20` Substitute `y=13` `20` `=` `20` Since the equation is true, the answer is correct.`y=13`Hint
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Question 4 of 21
4. Question
Solve`a-4=11`- `a=` (15)
Correct
Fantastic!
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Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `a`, it needs to be alone on one side.Move `4` to the other side by adding `4` to both sides of the equation.`a` `-4` `=` `11` `a` `-4` `+4` `=` `11` `+4` `a` `=` `15` `-4+4` cancels out Check our workTo confirm our answer, substitute `a=15` to the original equation.`a-4` `=` `11` `15-4` `=` `11` Substitute `a=15` `11` `=` `11` Since the equation is true, the answer is correct.`a=15`Hint
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Question 5 of 21
5. Question
Solve`y-30=55`- `y=` (85)
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Keep Going!
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Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `y`, it needs to be alone on one side.Move `30` to the other side by adding `30` to both sides of the equation.`y` `-30` `=` `55` `y` `-30` `+30` `=` `55` `+30` `y` `=` `85` `-30+30` cancels out Check our workTo confirm our answer, substitute `y=85` to the original equation.`y-30` `=` `55` `85-30` `=` `55` Substitute `y=85` `55` `=` `55` Since the equation is true, the answer is correct.`y=85`Hint
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Question 6 of 21
6. Question
Solve`26-s=2`- `s=` (24)
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Correct!
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Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.First, make sure that the variable is positive by adding `s` to both sides of the equation.`26-``s` `=` `2` `26-``s` `+s` `=` `2` `+s` `26` `=` `2+``s` `-s+s` cancels out Now, to solve for `s`, it needs to be alone on one side.Move `2` to the other side by subtracting `2` from both sides of the equation.`26` `=` `2+``s` `26` `-2` `=` `2+``s` `-2` `24` `=` `s` `2-2` cancels out `s` `=` `24` Check our workTo confirm our answer, substitute `s=24` to the original equation.`26-s` `=` `2` `26-24` `=` `2` Substitute `s=24` `2` `=` `2` Since the equation is true, the answer is correct.`s=24`Hint
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Question 7 of 21
7. Question
Solve`n+5=-8`- `n=` (-13)
Correct
Great Work!
Incorrect
Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `n`, it needs to be alone on one side.Move `5` to the other side by subtracting `5` from both sides of the equation.`n` `+5` `=` `-8` `n` `+5` `-5` `=` `-8` `-5` `n` `=` `-13` `5-5` cancels out Check our workTo confirm our answer, substitute `n=-13` to the original equation.`n+5` `=` `-8` `-13+5` `=` `-8` Substitute `n=-13` `-8` `=` `-8` Since the equation is true, the answer is correct.`n=-13`Hint
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Question 8 of 21
8. Question
Solve for `x``x+3=6`- `x=` (3)
Correct
Well Done!
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Help VideoIsolate the `x` variable on one side of the equation`x+3` `-3` `=` `6` `-3` Subtract `3` from both sides `x``+3` `-3` `=` `6` `-3` `3-3` cancels out `x` `=` `3` `x=3`Hint
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Question 9 of 21
9. Question
Solve for `x``x+7=9`- `x=` (2)
Correct
Excellent!
Incorrect
Help VideoIsolate the `x` variable on one side of the equation`x+7` `-7` `=` `9` `-7` Subtract `7` from both sides `x``+7` `-7` `=` `9` `-7` `7-7` cancels out `x` `=` `2` `x=2`Hint
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Question 10 of 21
10. Question
Solve for `x``x+3=7`- `x=` (4)
Correct
Keep Going!
Incorrect
Help VideoIsolate the `x` variable on one side of the equation`x+3` `-3` `=` `7` `-3` Subtract `3` from both sides `x``+3` `-3` `=` `7` `-3` `3-3` cancels out `x` `=` `4` `x=4`Hint
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Question 11 of 21
11. Question
Solve for `x``x+2=11`- `x=` (9)
Correct
Great Work!
Incorrect
Help VideoIsolate the `x` variable on one side of the equation`x+2` `-2` `=` `11` `-2` Subtract `2` from both sides `x``+2` `-2` `=` `11` `-2` `2-2` cancels out `x` `=` `9` `x=9`Hint
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Question 12 of 21
12. Question
Solve for `x``x-4=10`- `x=` (14)
Correct
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Help VideoIsolate the `x` variable on one side of the equation`x-4` `+4` `=` `10` `+4` Add `4` to both sides `x``-4` `+4` `=` `10` `+4` `-4+4` cancels out `x` `=` `14` `x=14`Hint
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Question 13 of 21
13. Question
Solve for `a``a-30=100`- `a=` (130)
Correct
Fantastic!
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Help VideoIsolate the `a` variable on one side of the equation`a-30` `+30` `=` `100` `+30` Add `30` to both sides `a``-30` `+30` `=` `100` `+30` `-30+30` cancels out `a` `=` `130` `a=130`Hint
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Question 14 of 21
14. Question
Solve for `m``m+5=15`- `m=` (10)
Correct
Correct!
Incorrect
Help VideoIsolate the `m` variable on one side of the equation`m+5` `-5` `=` `15` `-5` Subtract `5` from both sides `m``+5` `-5` `=` `15` `-5` `5-5` cancels out `m` `=` `10` `m=10`Hint
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Question 15 of 21
15. Question
Solve for `x``x+12=16`- `x=` (4)
Correct
Excellent!
Incorrect
Help VideoIsolate the `x` variable on one side of the equation`x+12` `-12` `=` `16` `-12` Subtract `12` from both sides `x``+12` `-12` `=` `16` `-12` `12-12` cancels out `x` `=` `4` `x=4`Hint
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Question 16 of 21
16. Question
Solve for `y``y-3=9`- `y=` (12)
Correct
Nice Job!
Incorrect
Help VideoIsolate the `y` variable on one side of the equation`y-3` `+3` `=` `9` `+3` Add `3` to both sides `y``-3` `+3` `=` `9` `+3` `-3+3` cancels out `y` `=` `12` `y=12`Hint
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Question 17 of 21
17. Question
Solve`x-(-4)=-1`- `x=` (-5)
Correct
Fantastic!
Incorrect
Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.First, simplify the equation by turning the two minuses next to each other into a plus.`x` `-(-4)` `=` `-1` `x` `+4` `=` `-1` Next, to solve for `x`, it needs to be alone on one side.Move `4` to the other side by subtracting `4` from both sides of the equation.`x` `+4` `=` `-1` `x` `+4` `-4` `=` `-1` `-4` `x` `=` `-5` `4-4` cancels out Check our workTo confirm our answer, substitute `x=-5` to the original equation.`x+4` `=` `-1` `-5+4` `=` `-1` Substitute `x=-5` `-1` `=` `-1` Since the equation is true, the answer is correct.`x=-5`Hint
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Question 18 of 21
18. Question
Solve`y-1 1/2=13`Correct
Excellent!
Incorrect
Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `y`, it needs to be alone on one side.Move `1 1/2` to the other side by adding `1 1/2` to both sides of the equation.`y` `-1 1/2` `=` `13` `y` `-1 1/2` `+1 1/2` `=` `13` `+1 1/2` `y` `=` `14 1/2` `-1 1/2+1 1/2` cancels out Check our workTo confirm our answer, substitute `y=14 1/2` to the original equation.`y-1 1/2` `=` `13` `14 1/2-1 1/2` `=` `13` Substitute `y=14 1/2` `13` `=` `13` Since the equation is true, the answer is correct.`y=14 1/2`Hint
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Question 19 of 21
19. Question
Solve`e-2=4 3/5`Correct
Keep Going!
Incorrect
Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `e`, it needs to be alone on one side.Move `2` to the other side by adding `2` to both sides of the equation.`e` `-2` `=` `4 3/5` `e` `-2` `+2` `=` `4 3/5` `+2` `e` `=` `6 3/5` `-2+2` cancels out Check our workTo confirm our answer, substitute `e=6 3/5` to the original equation.`e-2` `=` `4 3/5` `6 3/5-2` `=` `4 3/5` Substitute `e=6 3/5` `4 3/5` `=` `4 3/5` Since the equation is true, the answer is correct.`e=6 3/5`Hint
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Question 20 of 21
20. Question
Solve`m-8.5=-1`- `m=` (7.5)
Correct
Nice Job!
Incorrect
Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `m`, it needs to be alone on one side.Move `8.5` to the other side by adding `8.5` to both sides of the equation.`m` `-8.5` `=` `-1` `m` `-8.5` `+8.5` `=` `-1` `+8.5` `m` `=` `7.5` `-8.5+8.5` cancels out Check our workTo confirm our answer, substitute `m=7.5` to the original equation.`m-8.5` `=` `-1` `7.5-8.5` `=` `-1` Substitute `m=7.5` `-1` `=` `-1` Since the equation is true, the answer is correct.`m=7.5`Hint
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Question 21 of 21
21. Question
Solve`b+1.3=-4.6`- `b=` (-5.9)
Correct
Well Done!
Incorrect
Help VideoInverse Operations
When moving a term to the other side of an equation, the operation is inversed.To solve for `b`, it needs to be alone on one side.Move `1.3` to the other side by subtracting `1.3` from both sides of the equation.`b` `+1.3` `=` `-4.6` `b` `+1.3` `-1.3` `=` `-4.6` `-1.3` `b` `=` `-5.9` `1.3-1.3` cancels out Check our workTo confirm our answer, substitute `b=-5.9` to the original equation.`b+1.3` `=` `-4.6` `-5.9+1.3` `=` `-4.6` Substitute `b=-5.9` `-4.6` `=` `-4.6` Since the equation is true, the answer is correct.`b=-5.9`Hint
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- One Step Equations – Add and Subtract
- One Step Equations – Multiply and Divide
- Two Step Equations
- Multi-Step Equations
- Solve Equations using the Distributive Property
- Equations with Variables on Both Sides
- Equations with Variables on Both Sides (Fractions)
- Solve Equations with Variables on Both Sides using the Distributive Property
- Equation Word Problems
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- Change the Subject of an Equation