Respuesta :

3x/4x in this case the x's can cancel and your left with 3/4

3/4 = 3x+7 / 5x - 8
3 = 4(3x + 7) / 5x - 8
3 = 12x + 28 / 5x - 8
3(5x-8) = 12x+28
15x-24 = 12x+28
15x-12x=28+24
27x=52
X=52/27