Question

5/(x – 1) – 3/(x + 1) = 15/(x2 – 1)

Answer 1

Ответ: x=3,5

Объяснение:

5/(x – 1) – 3/(x + 1) = 15/($x^{2}$ – 1)

$\frac{5(x+1) -3(x-1)}{(x-1)*(x+1)} = \frac{15}{x^{2} -1} \\\\\frac{5x + 5 - 3x +3}{x^{2} -1} = \frac{15}{x^{2} -1}\\\\2x + 8 = 15\\2x = 15 - 8\\2x = 7\\x = 3,5$