Question

 помогите решить:
 6х+7=4х-1
6(4х+3)=5х-1
6(2х+1)+2х=5х-12
3(5х-2)-7(3х+4)=-24
7х-7(4х-1)=1-3(5х-2)
4,8(х-3)+1=2,4(2х+3)

Answer 1

1)6х+7=4х-1 6х-4х=7+1 2х=8 х=4 2)24х+18=5х-1 24х-5х=18+1 19х=19 х=1

Answer 2

 6х+7=4х-1
6х-4х=-1-7
2х=-8
х=-8:2
х=-4

6(4х+3)=5х-1
24х+18=5х-1
24х-5х=-1-18
-19х=-19
х=-19:(-19)
х=1

6(2х+1)+2х=5х-12
12х+6+2х=5х-12
12х+2х-5х=-12-6
9х=-18
х=-18:9
х=-2

3(5х-2)-7(3х+4)=-24
15х-6-21х-28=-24
15х-21х=-24+6+28
-6х=10
х=110:(-6)
х=-106
х=-1 46
х=-1 23

7х-7(4х-1)=1-3(5х-2)
7х-28х+7=1-15х+6
7х-28х+15х=1+6-7
-6х=0
х=0 нет решений

4,8(х-3)+1=2,4(2х+3)
4.8х-14.4+1=4.8х+7.2
4.8х-4.8х=7.2+14.4-1
0=20.6 нет решений