Respuesta :
[tex] \frac{4x+4}{3} = 12 [/tex]
Multiply both sides by 3.
4x + 4 = 36
Subtract 4 from both sides.
4x = 32
Divide both sides by 4.
x = 8
Multiply both sides by 3, subtract 4 from both sides, and then divide both sides by 4. (or you could cross multiply)
[tex] \frac{3(4x + 4)}{3} = 3(12) [/tex]
4x + 4 = 36
4x = 32
x = 8