Question

Решите пошагово плиз​

Answer 1

$\frac{3 |2(x - 3) + 21| }{17} = 2.5 \\ 3 |2x - 6 + 21| = 2.5 \times 17 \\ 3 |2x + 15| \div 3 = 42.5 \div 3 \\ |2x + 15| = \frac{85}{6}$

1)

$2x + 15 = - \frac{85}{6} \\ 2x = - \frac{85}{6} - 15 \\ 2x = - \frac{175}{6} \\ x = - \frac{175}{6} \div 2 \\ x = - \frac{175}{12}$

2)

$2x + 15 = \frac{85}{6} \\ 2x = \frac{85}{6} - 15 \\ 2x = - \frac{5}{6} \\ x = - \frac{5}{6} \div 2 \\ x = - \frac{5}{12}$

ответ:

$x1 = - \frac{175}{12} \\ x2 = - \frac{5}{12}$