Question

плиз решите номер 845(1) я даю 15 баллов

Answer 1

$15 \frac{4}{7} - 4 \frac{3}{8} \times (1 \frac{3}{7} - x) = 13 \frac{14}{7} \\ \frac{60}{7} - \frac{3}{2} \times ( \frac{3}{7} - x) = \frac{52}{7} \\ \frac{60}{7} - \frac{9}{14} + \frac{3}{2}x = \frac{52}{7} \\ \frac{111}{14} + \frac{3}{2}x = \frac{52}{7} \\ 111 + 24x = 104 \\ 21x = 104 - 111 \\ 21x = - 7 \\ x = - \frac{1}{3}$