Equation

Subtract 3x from both sides

Divide by -9 on both sides

Plug in for y

Distribute -9 into the ( ) and simplify
Equation

Divide by 3 on both sides

Plug in for y

Simplify
Equation

Subtract 2x from both sides

Divide by -6 on both sides

plug in for y

Distribute -6 into the ( )

Simplify