Question

d) (x - 5)/10 + (1 - 2x)/5 = (3-x)/4

Answer 1

Resposta:

$\frac{(x - 5)}{10} + \frac{(1 - 2x)}{5} = \frac{(3 - x)}{4} \\ \\ \frac{(x - 5)}{10} + \frac{(1 - 2x)}{5} - \frac{(3 - x)}{4} = 0 \\ \\ \frac{2 \times (x - 5) + 4 \times (1 - 2x) - 5 \times (3 - x)}{20} = 0 \\ \\ 2 \times (x - 5) + 4 \times (1 - 2x) - 5 \times (3 - x) = 0 \\ 2x - 10 + 4 - 8x - 15 + 5x = 0 \\ - x - 21 = 0 \\ - x = 21 \times ( - 1) \\ x = - 21$