Question

(2x + 5)+(3X+8)=7
4+x-8+(2x-5)=0
Решите плиз

Answer 1

(2х+5)+(3х+8)=7
2х+5+3х+8=7
5х=7-5-3
5х=-5
х=-1
4+х-8+(2х-5)=0
4+х-8+2х-5=0
3х=-4+8+5
3х=9
х=3