Two Step Equations

When solving equations we ...

• use the order of operations in order.

• use the order of operations in reverse order.

• randomly pick what to do first.

• guess and hope we get it right!

What would you do FIRST to solve this equation:

 $\frac{x}{2}-8=-17$  

• Multiply both sides by 2

• Divide both sides by 2

• Add 8 to both sides

• Subtract 8 from both sides

Solve:

 $\frac{x}{2}-8=-17$  

• -18

• -2

• -12

• -1

What are the UNDOS for this equation?

 $9k-5=-68$  

• Multiply and subtract

• Divide and add

• Multiply and add

• Divide and subtract

Solve:

 $9k-5=-68$  

• 8

• -1

• -19

• -7

What would you do SECOND in solving this equation?

 $-4a+10=-10$  

• Add 10 to both sides

• Subtract 10 from both sides

• Divide both sides by -4

• Multiply both sides by -4

Solve:

 $-4a+10=-10$  

• 5

• 1

• -13

• -5

What are the DOs for this equation:

 $\frac{a}{5}+6=4$  

• Multiply and add

• Multiply and subtract

• Divide and add

• Divide and subtract

Solve:

 $\frac{a}{5}+6=4$  

• -10

• -7

• -9

• -19

What would you do FIRST to solve this equation:

 $4+\frac{x}{3}=10$  

• Multiply both sides by 3

• Divide both sides by 3

• Add 4 to both sides

• Subtract 4 from both sides