Question

4 (5x-3)-64 (3-x)-3 (12-4)=96

Answer 1

4.(5x - 3) -64.(3 - x) -3.(12 - 4) = 96
4.(5x - 3) -64.(3 - x) -3.(8) = 96
4.(5x - 3) -64.(3 - x) -24 = 96

Fazendo agora o "chuveirinho", temos:

4.5x + 4.(-3) -64.3 -64.(-x) -24 = 96
20x - 12 - 192 + 64x - 24 = 96

Isolando o 'x', temos:

20x + 64x = 96 + 24 + 192 + 12
84x = 324
    x = $\frac{324}{84}$
    x = $\frac{27}{7}$