Multiplication and Division Equations

The variable, k, is being divided by 11. How should you show your work to isolate the variable?

• Divide both sides by 11

• Multiply both sides by 11.

• Add 11 to both sides.

• Subtract 11 to both sides.

y/3=12

• 36

• -36

• 4

• -4

Which equation has w = 8 as the solution?

• 8w= 64

• 16w = 240

• 16 - w = 9

• 4 + w = 10

What is the inverse operation of division?

• Division

• Multiplication

• Addition

• Subtraction

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

• multiply both sides by ³/₂ 

• divide both sides by 3

• multiply both sides by 3

• subtract ²/₃  from both sides

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

Solve for b
2b = -16

• 8

• 4

• -8

• 3

x = 20

x = 7

x = 10

x = 3

• x = 20

• x = 7

• x = 10

• x = 3

How would you isolate the variable in the following equation?

7x = 42

• Multiply both sides by 7, the answer is 294

• Divide both sides by 7, the answer is 6

• Subtract 7 from both sides, the answer is 35

• Add 7 to both sides, the answer is 49

How would you isolate the variable for the following equation?

• Subtract 9 from both sides. The answer is

  36

• Divide both sides by 9, the answer is

  5

• Divide both sides by 45, the answer is 5

• Multiply both sides by 9, the answer is 5.