Question

Реши уравнение:
x+4/2+4x−7/7−8−x/14=1.

​

Answer 1

$\frac{x + 4}{2} + \frac{4x - 7}{7} - \frac{8 - x}{14} = 1 \\ \frac{7x + 28}{14} + \frac{8x - 14}{14} - \frac{8 - x}{14} = 1 \\ \frac{7x + 28 + 8x - 14 - (8 - x)}{14} = 1 \\ \frac{7x + 28 + 8 x - 14 - 8 + x}{14} = 1 \\ \frac{16x + 6}{14} = 1 \\ \frac{2(8x + 3)}{14} = 1 \\ \frac{8x + 3}{7} = 1 \\ 8x = 7 - 3 \\ 8x = 4 \\ x = \frac{4}{8} \\ x = \frac{1}{2} \\ x = 0.5$

Ответ:х=0,5