Solve One Step Equations By Adding and Subtracting

Solving One-Step Equations

Addition and Subtraction

In Algebra, we use Inverse Operations to solve an equation for an unknown variable.​​

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Inverse Operations

Multiple Choice

What is the inverse operation of subtraction?

• Subtraction

• Multiplication

• Division

• Addition

Multiple Choice

What is the inverse operation of addition?

• addition

• subtraction

• multiplication

• division

Multiple Choice

What is the inverse operation needed to solve for p?

254 = p - 765

• subtraction

• addition

• multiplication

• division

Multiple Choice

In the equation
x + 7 = 12
7 is being added to the variable, x. How should you show your work to isolate the variable and solve the equation? 

• Subtract 7 from both sides. The solution is x = 5.

• Add 7 to both sides. The solution is x = 19.

• Multiply both sides by 7 The solution is x = 84.

Multiple Choice

y + 6 = 20

• y = 22

• y = 13

• y = 14

• y = 16

Multiple Choice

x - 10 = 12

• 22
• -22
• 2
• -2

Multiple Choice

12 + z = -15

• -3

• 3

• -27

• 27

Multiple Choice

2 + n =16

• 18
• -18
• 14
• -14

Multiple Choice

m - 5 = -10

• -15
• 15
• -5
• 5

Multiple Choice

x - 15 = -20

• -5
• 5
• -35
• 35

Multiple Choice

r + 18 = -27

• -45

• 45

• -9

• 9

Multiple Choice

25 + k = 13

• -12

• 12

• -38

• 38