Question

Решите пж: 7х-5х= -2х-15 20-3х=5-2х

Answer 1

7х-5х=-2х-15
7х-5х+2х+15=0
4х+15=0
4х=о-15
4х=-15
х=-15÷4
х=-3,75
20-3х=5-2х
20-3х-5+2х=0
15-х=0
х=15-0
х=15