Solving for Equations

What is the first step of solving:

7y - 8 = 20

• Adding 8 to both sides

• Subtracting 8 from both sides

• Multiplying 7 on both sides

• Dividing both sides by 7

What do I do after I add 5 to both sides:

6x - 5 = 7

• Subtract 5 from both sides

• Add 5 to both sides

• Multiply both sides by 6

• Divide both sides by 6

What is the first step to solve:

16y - 4 = 28

• Multiply both sides by 16

• Add 4 to both sides

• Divide both sides by 16

• Subtract 4 from both sides

What do I do after I subtract 12 from both sides?

• Subtract 5 from both sides

• Multiply both sides by 5

• Divide both sides by 5

• Add 5 to both sides

• x=-10

• x=2

• No Solution

• All Real Numbers

• x=3

• x=2

• x=-2

• x=1

Solve for x

• 35

• 3.5

• 0.35

• -35

• 1.5

• 6

• -6

• -1.5

1. Kylie and Ricardo decide to start a dog watching business for their neighborhood. 

3. Kylie thinks it would be best to charge customers $27 for a membership and then $5 per time they walk a dog. 

5. Ricardo thinks it would be best to charge $8 per dog walk. 

7. For what number of walks will their two plans cost the same amount of money?

Mathematical Equivalence

ON

• 0

• 1

• -1

• 4