3x+9=24

Subtract 9 from both sides of the equation.

3x=24-9

Subtract 9 from 24.

3x=15

3x=15

Divide each term in 3x=15 by 3.

3×3=153

Cancel the common factor of 3.

Cancel the common factor.

3×3=153

Divide x by 1.

x=153

x=153

Divide 15 by 3.

x=5

x=5

Solve for x 3x+9=24