4x+9+7x=31

Add 4x and 7x.

11x+9=31

Subtract 9 from both sides of the equation.

11x=31-9

Subtract 9 from 31.

11x=22

11x=22

Divide each term in 11x=22 by 11.

11×11=2211

Cancel the common factor of 11.

Cancel the common factor.

11×11=2211

Divide x by 1.

x=2211

x=2211

Divide 22 by 11.

x=2

x=2

Solve for x 4x+9+7x=31