3х-1+2(х+3)=42
3х-1+2х+6=42
5х=42-6+1
5х=37
х=37\5=7 2\5.
3х+2 = 14х-75
3х-14х=-75-2
-11х=-77
х=7.
2х+3(2х+7)=37
2х+6х+21=37
8х=37-21
8х=16
х=2.
5-3х-2(4х-1)=40
5-3х-8х+2=40
-11х=40-2-5
-11х=33
х=-3
(2х-0,1)+(3х-5)=7
2х-0,1+3х-5=7
5х=7+5+0,1
5х=12,1
х=2,42.
3х-1+2(х+3)=42
3х-1+2х+6=42
5х=42-6+1
5х=37
х=37\5=7 2\5.
3х+2 = 14х-75
3х-14х=-75-2
-11х=-77
х=7.
2х+3(2х+7)=37
2х+6х+21=37
8х=37-21
8х=16
х=2.
5-3х-2(4х-1)=40
5-3х-8х+2=40
-11х=40-2-5
-11х=33
х=-3
(2х-0,1)+(3х-5)=7
2х-0,1+3х-5=7
5х=7+5+0,1
5х=12,1
х=2,42.