Question

5/(x – 1) – 3/(x + 1) = 15/(x2 – 1) решите ​

Answer 1

Объяснение:

$\frac{5}{x - 1} - \frac{3}{x + 1} = \frac{15}{ {x}^{2} - 1 }$

$5(x + 1) - 3(x - 1) = 15$

$5x + 5 - 3x + 3 = 15$

$2x + 8 - 15 = 0$

$2x - 7 = 0$

$2x = 7$

$x = \frac{7}{2}$

$x = 3.5$