Question

4/7(1/2х-2/3)=2х+4 1/3
срочно!!!​

Answer 1

Ответ:

$\frac{4}{7} ( \frac{1}{2} x - \frac{2}{3} ) = 2x + 4 \frac{1}{3} \\ \frac{2}{7} x - \frac{8}{21} = 2x + 4 \frac{1}{3} \\ \frac{2}{7} x - 2x = 4 \frac{1}{3} + \frac{8}{21} \\ - 1 \frac{5}{7} x = 4 \frac{7 + 8}{21} \\ - 1\frac{5}{7} x = 4 \frac{5}{7} \\ x = \frac{33}{7} \times ( - \frac{7}{12} ) \\ x = - \frac{33}{12} = - 2 \frac{9}{12} \\ x = - 2 \frac{3}{4}$