Equations with Rational Numbers

Solve the equation. Check your solution.

• 24

• ¹⁴⁷/₈ or 18 ³/₈

• 168

• -24

Solve

• 9.7

• 7.9

• 97

• 79

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

Last Friday Cicely had $22.50. Over the weekend she received some money for cleaning out the attic. She now has $32. Which equation represents how much money she received?

• 22.50/ x = 32

• 32/ 22.50 = x

• 22.50 + x = 32

• 32 - x = 22.50

WRITE AN EQUATION
After paying $5.12 for a salad, Norachai has $27.10. How much money did he have before buying the salad?

• 27.10+5.12=x

• 27.10-5.12=x

• x-5.12=27.10

• 5.12+x=27.10

Evaluate: x-5 = -12

• 17

• -17

• 7

• -7

b + 1.5 = -5.5

• 4

• -4

• 7

• -7

1/2 + n= -1/4

• -1/2

• 1/2

• -3/4

• 3/4

• add both sides by 2.17

• subtract both sides by 2.17

• multiply both sides by 2.17

• divide both sides by 2.17

-4(1 + 3x) = 68

• x = -16

• x = -6

• x = 24

• x = 6