Solving Equations with Rational Numbers

Solve.

Solve.

Solve.

Evaluate: x-5 = -12

• 17

• -17

• 7

• -7

If one roll of masking tape costs $1.15, how many rolls can Emma buy  with $5.75?

• 1.15(5.75) = x
• 5.75x = 1.15
• 1.15x = 5.75
• x = 1.15/ 5.75

Andrew has saved $55 toward the purchase of an IPOD. The IPOD costs $145. Which equation represents the amount Andrew needs to save to by the IPOD?

• 55 + x = 145
• 145x = 55
• 55 - x = 145
• 145 (55) = x

• subtract both sides by 9

• add both sides by 9

• multiply both sides by 9

• divide both sides by 9

b + 1.5 = -5.5

• 4

• -4

• 7

• -7

1/2 + n= -1/4

• -1/2

• 1/2

• -3/4

• 3/4

3.6k = 7.56

• 2.8

• 3.96

• 0.48

• 2.1