y=9+3z

Rewrite the equation as 9+3z=y.

9+3z=y

Subtract 9 from both sides of the equation.

3z=y-9

Divide each term in 3z=y-9 by 3.

3z3=y3+-93

Cancel the common factor of 3.

Cancel the common factor.

3z3=y3+-93

Divide z by 1.

z=y3+-93

z=y3+-93

Divide -9 by 3.

z=y3-3

z=y3-3

Solve for z y=9+3z