78=-10z+18

Rewrite the equation as -10z+18=78.

-10z+18=78

Subtract 18 from both sides of the equation.

-10z=78-18

Subtract 18 from 78.

-10z=60

-10z=60

Divide each term in -10z=60 by -10.

-10z-10=60-10

Cancel the common factor of -10.

Cancel the common factor.

-10z-10=60-10

Divide z by 1.

z=60-10

z=60-10

Divide 60 by -10.

z=-6

z=-6

Solve for z 78=-10z+18