Rewrite the equation as -2z+9=y.
Subtract 9 from both sides of the equation.
Divide each term by -2 and simplify.
Divide each term in -2z=y-9 by -2.
Cancel the common factor of -2.
Cancel the common factor.
Divide z by 1.
Simplify each term.
Move the negative in front of the fraction.
Dividing two negative values results in a positive value.
Solve for z y=-2z+9