6х-12=х+48 ...................10х+5=3х+40............2(6х-3)=54.......3(2х+1)=4х+19......ПОМОГИТЕ РЕШИТЬ

Ответ:

6х-12=х+48

6х-х=48+12

5х=60

х=60:5

х=12

10х+5=3х+40

10х-3х=40-5

7х=35

х=35:7

х=5

2(6х-3)=54

12х-6=54

12х=54-6

12х=48

х=48:12

х=4

3(2х+1)=4х+19

6х+3=4х+19

6х+4х=19-3

10х=16

х=16:10

х=1.6