Question

х/5+х/15+х=-3 4/5 решите уравнение срочно

Answer 1

$\frac{x}{5} + \frac{x}{15} + x = - 3 \frac{4}{5} \\ \\ \frac{x}{5} + \frac{x}{15} + x = - \frac{12}{5} \\ \\ 3x + x + 15x = - 36 \\ 19x = - 36 \div 19 \\ x = - \frac{36}{19}$