You can put this solution on YOUR website! 5(3x + 4) = 15
5 * 3x = 15x
5 * 4 = 20
15x + 20 = 15
Subtract 20 from each side of the equation.
15x + 20 - 20 = 15 - 20
Combine like terms:
20 - 20 = 0
15 - 20 = -5
15x = -5
Divide each side by 15
15x/15 = -5/15
x = -1/3