Объяснение:
1) 1/5*х+2=15
х+10=75
х=75-10
х=65
2) 5(3х-1)=40
3х - 1=8
3х=9
х=3
3) (х-4)/5 -2 = (3х)/5
х-4-10=3х
х-14=3х
-2х=14
х=-7
4) 7х -(х+3)=3(2х-1)
7х-х-3=6х-3
6х=6х
0
1/5*х+2=15
1/5*х=15-2
1/5*х=13
х=13*5
2)5-(3х-1)=40
5-3х+1=40
5-3х=40
-3х=40-5
-3х=35
х=-35/3
Объяснение:
1) 1/5*х+2=15
х+10=75
х=75-10
х=65
2) 5(3х-1)=40
3х - 1=8
3х=9
х=3
3) (х-4)/5 -2 = (3х)/5
х-4-10=3х
х-14=3х
-2х=14
х=-7
4) 7х -(х+3)=3(2х-1)
7х-х-3=6х-3
6х=6х
0
1/5*х+2=15
1/5*х=15-2
1/5*х=13
х=13*5
х=65
2)5-(3х-1)=40
5-3х+1=40
5-3х=40
-3х=40-5
-3х=35
х=-35/3