One-Step Equations Add Subtract

r + 20 = 27

• r = 7
• r = 47
• r = 13
• r = 20

s - 22 = 50

• s = 28
• s = 20
• s = 72
• s = 75

Which of the following shows the work that gives the correct answer?

g - 15 = 30

• g -15= 30 + 15

• g -15 + 15 = 30 + 15

• g -15 = 30 - 15

• g -15- 15 = 30 - 15

S + 18 = 24

• S = 42

• S = 3²

• S = 18

• S = 6

What is the first step in solving the equation y - 33 = 147 ?

• Subtract 33 from both side of the equation.

• Add 33 to 147.

• Add 33 to both sides of the equation.

• Subtract 147 from both sides of the equation.

What is the first step in solving the equation

20.5 = x + 4 ?

• Subtract 4 from both sides of the equation.

• Subtract 4 from 20.5

• Subtract 20.5 from both sides of the equation.

• Add 4 to both sides of the equation.

17 = x + 3

• x = 20
• x = 14
• x = 13
• x = 19

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 
• Subtract 62 from each side.
• Multiply each side by 62.
• Add 123 to each side.

What what is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

-16+ x= -15

• 2
• 0
• -1
• 1