Question

a)2x/5 - 2 = x/4 + 4
b)2x/5 - 2 = x/4 + 4

Answer 1

Resposta:

$\frac{2x}{5} -2 = \frac{x}{4} + 4 \\ \frac{2x}{5}- \frac{2}{1} = \frac{x}{4} + \frac{4}{1} \\ \frac{8x-40 = 5x+80}{20} \\ 8x-40 = 5x+80 \\ 8x -5x= 80 + 40 \\ 3x = 120\\ x = \frac{120}{3} \\x=40$