DJ #17 One-step Equations Add/Sub

What what is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

Solve the equation: 
x + 7 = 12

• x = 5
• x = 19
• x = -5
• x = 84

Solve the equation:
x - 4 = -3

• x = -7
• x = 1
• x = 12
• x = -12

Solve the equation:
x - 3 = -12

• x = 9 
• x = -15
• x = -9
• x = 15

Solve the equation:
x - 4 = 6

• x = 10
• x = -10
• x = 2
• x = -2

r + 20 = 27

• r = 7
• r = 47
• r = 13
• r = 20

x - 12 = 2

• 24

• 10

• 20

• 14

x + 8 = 15

• x = 23
• x = 7
• x = 120
• x = 15/8

n - 4 = 12

• n = 16
• n = 8
• n = 4/12
• n = 12/4