Question

3/4x+7(2-3/8x)=-1 решить, но только решение распишите.

Answer 1

8

Пошаговое объяснение:

3/4x + 7(2 - 3/8x) = -1

3/4x + 14 - 21/8x = -1

-15/8x = -15

15/8x = 15

x = 8

Answer 2

$\frac{3}{4} x + 7(2 - \frac{3}{8} x) = - 1 \\ \frac{3}{4} x + 14 - \frac{21}{8} x = - 1 \\ \frac{6}{8} x - \frac{21}{8} x = - 1 - 14 \\ - \frac{15}{8} x = - 15 \\ x = - 15 \div ( - \frac{15}{8} ) = \frac{15 \times 8}{15} = 8 \\ x = 8$