Solving Addition and Subtraction Equations

What needs to be done to solve this equation?

z - 5 = 20

• subtract both sides by 5.

• add five to both sides.

• cross out the 5.

• add five on the left side of the equation.

Solve the following equation and check your solution:

x - 11 = 9

Solve the following equation and check your solution:

72 = 24 + w

Solve the following equation and check your solution:

a + 5 = 12

Solve the following equation and check your solution:

12 = g - 56

An equation is a math problem with a(n) __________ sign.

• equal

• percent

• stop

• go

What is the inverse (opposite) of subtraction?

• addition

• multiplication

• subraction

• division

r + 20 = 27

• r = 7

• r = 47

• r = 13

• r = 20

17 = x + 3

• x = 20

• x = 14

• x = 13

• x = 19

x-10=40

• 50

• 40

• 30

• 400