Solving 2 Step Equations

Solve for x:

2x + 7 = 15

"Solve for x" means that the "x" needs to be...

• by itself on one side of the equal sign

• surrounded by numbers on the same side of the equal sign

• made an eXample of

Solve for x:

 $\frac{x}{3}-4=2$  

Solve for x:

5x + 12 = 27

The first step in solving for x in the equation below is...

 $-\frac{x}{4}+7=12$  

• Add 7 to both sides
  

• Subtract 7 from both sides
  

• Multiply both sides by 4
  

• Divide both sides by –4
  

Solve for x:

 $-\frac{x}{7}+4=9$  

Solve for x:

6x + 5 = –37

The LAST step in solving for x in the equation below is:

 $\frac{x}{8}-3=-1$  

• Add 3
  

• Subtract 1
  

• Multiply by 8
  

• Divide by 8
  

Solve for x:

 $7x-8=41$  

What are the 2 operations that you need to do in order to "undress" x in the equation below?

 $\frac{x}{2}+5=7$  

• Add 5 and Divide by 2
  

• Subtract 7 and Add 5
  

• Divide by 2 and then Add 5
  

• Subtract 5 and Multiply by 2