5/(x – 1) – 3/(x + 1) = 15/(x2 – 1) сколько будет?

Question

5/(x – 1) – 3/(x + 1) = 15/(x2 – 1) сколько будет?

Answer 1

(5х+5-3х+3)/(х+1)(х-1)=15/(х²-1)
5х+5-3х+3=15
2х=15-5-3
2х=7
х=3,5

Comments

спасибо