Question

помогите сделать 459 номер )

Answer 1

2/x-3=7/x+1 |×(x-3)(x+1)
(x+1)(x-3)×2/(x-3)=(x+1)(x-3)×7/(x+1)
2(x+1)=7(x-3)
2x+2=7x-21
2x-7x=-21-2
-5x=-23
x=4,6

Answer 2

2(х+1)=7(х-3)
2х+2=7х-21
5х=23
х=23/5
х=4,6