6х+2=3(2х+3)-х 8х-4=16-5х 3(х+1)=6(2х-4) 8х+2=10(2х+4) 12(х+2)=15(2х+4)

1) 6x+2-6x-9+x=0
x-7=0
x=7

2) 8x-4-16+5x=0
13x-20=0
13x=20
. . .20 . . . . . . . . 7
x= или х= 1---
. . . 13 . . . . . . . . 13

3) 3х+3=12х-24
3х+3-12х+24=0
-9х+27=0
х=27/(-9)
х=-3

4)8х+2=20х+40
8х+2-20х-40=0
-12х-38=0
-12х=38
х=38/(-12)
. . . . 19
х= - ---
. . . . 6

5) 12х+24-30х-60=0
-18х-36=0
-18х=36
х=-2