Adding and Subtracting One Step

r + 20 = 27

• r = 7
• r = 47
• r = 13
• r = 20

s - 22 = 50

• s = 28
• s = 20
• s = 72
• s = 75

S + 18 = 24

• S = 42
• S = 9

• S = 18
• S = 6

Solve the equation:
20.5 = x + 4

• 16.5
• 16.05
• 24.5
• 24.05

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

Which value of r makes the statement true?
r - 10 = 36

• 46
• 50
• 26
• 14

Which value of t makes the statement true?
18 + t = 50

• 29
• 32
• 52
• 68

Solve for x.

4 + x = 12

• 16

• 20

• 4

• 8