Equations Test Review

x + 8 = 15

• 7

• 8

• 9

• 6

n - 4 = 12

• 12

• 10

• 8

• 16

5n = 30

• 8

• 12

• 6

• 5

What is the inverse operation of subtraction?

• Subtraction
• Multiplication
• Division
• Addition

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

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.

• x = 20
• x = 7
• x = 10
• x = 3

What is the first step you would do to solve the following equation?

2x - 14 = 34

• Add 14 to both sides

• Subtract 14 from both sides

• Divide both sides by 2

• Combine like terms

What value for x makes the following equation true?

12x + 4x = 64

• x = 4

• x = 16

• x = 8

• x = -4

Solve the following equation

5x + 3 = 28

• x = 25

• x - 6.2

• x = 5

• x = 3.8