Respuesta :

12x - 3x + 96 = 12x + 36

first, combine like terms

9x + 96 = 12x + 36

then, subtract 36 on both sides

96 - 36 = 60

9x + 60 = 12x

subtract 9x from both sides

60 = 3x

divide by 3 on both sides

this gives you x = 20, I hope I helped :)