Solve Equations by Adding or Subtracting Mastery

1. x - 6 = 12. How should you show your work to isolate the variable and solve the equation?

• Add 12 to each side.

• Subtract 6 from each side.

• Add 6 to each side.

• Multiply each side by 6.

Describe how you would isolate the variable. x + 22 = 64

• Add 22 to both sides of the equation

• Divide both sides of the equation by 22

• Multiply both sides of the equation by 22

• Subtract 22 from both sides of the equation

What is the reverse operation of adding?

• Multiplying

• Adding

• Subtracting

• Dividing

The reverse operation of subtraction is

• multiplying

• subtracting

• dividing

• adding

x + 2 = -1

• 3

• -3

• -1

• 1

What is the correct first step in solving this equation: y - 12 = 20?

• subtract 12 from both sides of the equation

• subtract 12 from the left side of the equation only

• add 12 to both sides of the equation

• add 12 to the left side of the equation only

What needs to be done to solve this equation? 28 = p + 15

• subtract 15 from both sides of the equation

• add 15 to both sides of the equation

• subtract 28 from both sides of the equation

• add 28 to both sides of the equation

x - 8 = 16

• x = 9

• x = 8

• x = 24

• x = 16

SOLVE: x - 12 = 10

• x = 12

• x = 22

• x = 2

• x = 20

5 + a = 37

• a = 185

• a = 42

• a = 32

• a = 37/5