Solving Equations Inverse Operations

Solve the equation: x + 5 = 12

• 3

• 15

• 7

• 10

Tags

6.10.A

6.10.B

Solve the equation: 8 - y = 3

• 10

• 5

• 2

• -5

Tags

6.10.A

6.10.B

Solve the equation: 4z = 20

• 5

• 2

• 10

• 8

Tags

6.10.A

6.10.B

Solve the equation: 15 / a = 3

• 1

• 5

• 25

• 10

Tags

6.10.A

6.10.B

What would be the best first step to solving the equation?

• multiply both sides by 3

• multiply both sides by 4

• divide both sides by 3

• divide both sides by 4

• Divide by 3 on both sides, h=6

• Divide by 18 on both sides, h=3/18

• Multiply by 3 on both sides, h=54

• Subtract 3 on both sides, h=15

• Subtract 4 on both sides, y=6

• Subtract 10 on both sides, y=-6

• Add 4 on both sides, y=14

• Add 10 on both sides, y=4

In order to solve an equation, you need to do the ​ (a)  

• inverse

• stand on your head

• rewrite

• say the Pledge of Allegiance

• copy off of your neighbors paper

To undo an operation, you must do its opposite or inverse to both sides of the equation. Match each operation to its inverse.

• Subtraction

• Division

• Multiplication

• Subtraction

• Division

• Multiplication

• Addition

• Addition

• Divide by 14 on both sides, h=7/14

• Multiply by 7 on both sides, h=98

• Multiply by 14 on both sides, h=98

• Divide by 7 on both sides, h=2