Math 8 Equations Homework

2x + 6 = 18

• x = 12

• x = -6

• x = 6

• x = -12

4x - 5 = 11

• x = -4

• x = 6

• x = -6

• x = 4

-3x + 8 = -1

• x = 5

• x = 3

• x = -5

• x = -3

-1x + 10 = 5

• x = 5

• x = 15

• x = -5

• x = -15

Solve:

 $7+\frac{a}{3}=5$  

•  $a=-2$  
  

•  $a=-6$  
  

•  $a=3$  
  

•  $a=15$  
  

Solve:

 $20=2-a$  

•  $a=18$  
  

•  $a=-18$  
  

•  $a=-10$  
  

•  $a=12$  
  

• t = 20
• t = -20
• t = -40
• t = 40

 $\frac{6}{5}x-10=20$  

• 15

• -15

• 25

• 6

Solve:

 $4y+-9=-45$  

•  $y=-4$  

•  $y=4$  
  

•  $y=13.5$  

•  $y=-9$  

You bought a magazine for $8 and 6 erasers.  If you spent a total of $11, then how much did each eraser cost?

• $3.00
• $2.00
• $.50
• $.625