Practice 12/6

r + 20 = 27

• r = 7
• r = 47
• r = 13
• r = 20

6x = 30

• x = 5
• x = 24
• x = 6
• x = 36

Solve for x:

• x = 20
• x = 7
• x = 10
• x = 3

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

What is the inverse operation of subtraction?

• addition

• subtraction

• multiplication

• division

• add 18 to both sides

• subtract 18 from both sides

• add 12 to both sides

• subtract 12 from both sides

• 3

• 4

• -3

• 2

Level 2

Solve for a

• a= -2

• a= -7.5

• a= 2

• a= 6

Level 3

Solve for a

• a= 9

• a= -9

• a= -5

• a= 5

Level 3

Solve for a

• a= -2

• a= -6

• a= 3

• a= 15