Respuesta :
the answer is 7
3x-3=18 (take 3 to the other side to solve for x)
3x=18+3 (3 will be positive)
3x=21 (divide both sides by 3)
x=7
3x-3=18 (take 3 to the other side to solve for x)
3x=18+3 (3 will be positive)
3x=21 (divide both sides by 3)
x=7