621 Solving Equations

Which equation matches the picture?

• x + 3 = 12

• -3x - 3 = -12

• 6x = 12

• 3x + 3 = 12

Simplify the expression on the mat. What does x equal?

 $3\left(x+1\right)=12$  Use algebra tiles to model and solve the equation.

Distribute.

25(3x - 2)

• 75x - 2

• 75x - 50

• 25x

• 73x

 $8\left(4x^2+6x\right)$  Distribute.

•  $80x^2$  

•  $32x^2+48x$  

•  $32x^2+6x$  

 $-10\left(4m+3\right)$  Distribute.

•  $-10m$  

•  $40m\ +\ 30$  

•  $-40m\ -3$  

•  $-40m\ -\ 30$  

 $9m\left(7m-6\right)$  Distribute.

•  $63m^2-54m$  

•  $63m\ -\ 54m$  

•  $9m^2$  

•  $63m^2+54m$  

Which expressions are equivalent. Select ALL that apply.

• $\frac{20}{5}$

• $-\frac{20}{5}$

• $\frac{20}{-5}$

• $\frac{\left(-20\right)}{5}$

 $8.4\left(7x-4\right)+3.9$  Simplify the expression. No calculators.

•  $58.8x-33.6$  

•  $58.8x-29.7$  

•  $58.8x-37.5$  

•  $29.1x$  

 $\frac{4}{5}\left(\frac{3}{4}x-\frac{10}{9}\right)+\frac{1}{5}$  Simplify the expression. No Calculators!

•  $\frac{3}{5}x-\frac{40}{45}$  

•  $\frac{3}{5}x-\frac{39}{45}$  

•  $\frac{3}{5}x-\frac{49}{45}$  

•  $\frac{3}{5}x-\frac{31}{45}$