Question

2(4-x)-3(x-2) при x=2 2/5

Answer 1

$2(4 - x) - 3(x - 2) = \\ 8 - 2x - 3x + 6 = 14 - 5x \\ x = 2 \frac{2}{5} \\ 14 - 5x = 14 - 5 \times 2 \frac{2}{5} = \\ 14 - \frac{12 \times 5}{5} = 14 - 12 = 2$