8) 87-2х=8х+112
8х+2х=87-112
10х=-25
х=-2.5
9) 3х+3+11=34-2х
3х+2х=34-3-11
5х=20
х=4
10) 4+10х+5=39
10х=39-4-5
10х=30
х=3
8) 87-2х=8х+112
8х+2х=87-112
10х=-25
х=-2.5
9) 3х+3+11=34-2х
3х+2х=34-3-11
5х=20
х=4
10) 4+10х+5=39
10х=39-4-5
10х=30
х=3