Question

Пожалуйста срочно решите​

Answer 1

$\frac{2}{3} \cdot(x + 3) + \frac{3}{4} (x - 1) = 14 \\ \frac{2}{3} x + 2 + \frac{3}{4} x - \frac{3}{4} = 14 \\ \frac{2}{3} x + \frac{5}{4} + \frac{3}{4} x = 14 \: \: \: \: \: | \cdot12 \\ 8x + 15 + 9x = 168 \\ 17x + 15 = 168 \\ 17x = 168 - 15 \\ 17x = 153 \\ x = 153 \div 17 \\ \bold{x = 9}$