Solving Equations with Variables on Both Sides

Solve for x.

 $8x-7=4x+21$  

•  $x=3.5$  

•  $x=7$  

•  $x=14$  

•  $x=\frac{7}{3}$  

What is the inverse operation of multiplication?

• Multiply by the reciprocal.

• Division.

• Addition.

• Subtraction.

Combine like terms.

 $13x+9=6x–12$  

•  $7x=-3$  

•  $19x=-21$  

•  $7x=-21$  

•  $19x=-3$  

Solve for x.

 $6x+3=6x\ –\ 20\ –\ x$  

•  $x=-23$  

•  $x=23$  

•  $x=-17$  

•  $x=-\frac{23}{13}$  

After you combine like terms, how many x's are in the following expression?

 $2x+3+3x-4x+1$  

Solve for x.

 $16x\ –\ 5=14x+1$  

•  $x=-3$  

•  $x=2$  

•  $x=3$  

•  $x=\frac{1}{3}$