k+20=9k-4

Subtract 9k from both sides of the equation.

k+20-9k=-4

Subtract 9k from k.

-8k+20=-4

-8k+20=-4

Subtract 20 from both sides of the equation.

-8k=-4-20

Subtract 20 from -4.

-8k=-24

-8k=-24

Divide each term in -8k=-24 by -8.

-8k-8=-24-8

Cancel the common factor of -8.

Cancel the common factor.

-8k-8=-24-8

Divide k by 1.

k=-24-8

k=-24-8

Divide -24 by -8.

k=3

k=3

Solve for k k+20=9k-4