2(4-3x)+3(x-2)=
38-6х+3х-6=38
3х-6х=38+6-38
-3х=6
х=6:(-3)
х=-2
4(4+5x)-5(1-2x)= -1
16+20х-5+10х=-1
20х+10х=-1-16+5
30х=10
х=10:30
х=1/3
3(2x+4)+2(1-x)=4
6x+8+2-2х=4
6х-2х=4-2-8
4х=-6
х=-6:4
х=-1.5
3(1-2x)+4(3x-1)=7
3-6х+12х-4=7
12х-6х=7+4-3
6х=8
х=8:6
х=1 1/3