Subtract from both sides of the equation.

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Simplify .

Factor out of .

Rewrite as .

Factor out of .

Factor out of .

Factor out of .

Rewrite negatives.

Rewrite as .

Move the negative in front of the fraction.

Solve for z -cz+6z=tz+83