Pre-7.4 Warmup

 $2x=14$  

• x=28

• x=7

• x=2

• x=14

 $\frac{x}{5}=-8$  

•  $x=-\frac{8}{5}$  

•  $x=40$  

•  $x=-40$  

•  $x=-\frac{5}{8}$  

 $x+15=-20$  

•  $x=-5$  

•  $x=5$  

•  $x=-35$  

•  $x=35$  

 $-8+x=-12$  

•  $x=-4$  

•  $x=4$  

•  $x=20$  

•  $x=-20$  

Distribute:

 $4\left(2x-8\right)$  

• 8x - 8
  

• 8x - 32x

• -24x

• 8x - 32

Simplify:

 $x+3+x+3+x+3=24$  

•  $x+9=24$  

•  $2x+6=24$  

•  $3x+9=24$  

•  $12x=24$  

Factor:

 $6x-33$  

•  $-27x$  

•  $6\left(x-33\right)$  

•  $3\left(2x+11\right)$  

•  $3\left(2x-11\right)$  

The triangle has a perimeter of 36 feet. Which equation represents the perimeter of the triangle?

• 27x=36

• x=36

• 2x=25

• 2x+25=36

The square has a perimeter of 76. Which THREE equations represent the perimeter of the square? (Select all that apply)

•  $4\left(2x+3\right)=76$  

•  $2x+3=76$  

•  $8x+12=76$  

•  $2\left(2x+3\right)+2\left(2x+3\right)=76$  

•  $8x+3=76$