1)2(4-3х)+3(х-2)=3,
8 - 6х + 3х - 6=3,
2 - 3х=3,
-3х=3-2,
-3х=1,
х= -1/3
2)4(4+5х)-5(1-2х)=-1
16 +20х -5 +10х =-1,
30х + 11=- 1,
30 х= -1-11,
30х=-12,
х=-12/30,
х=-4/10=-0,4
3)3(2х+4)+2(1-х)=4
6х+12+2-2х=4,
4х + 14 = 4,
4х=4-14,
4х=-10,
х=-10/4=-2,5
4)3(1-2х)+4(3х-1)=7
3 - 6х +12х -4=7,
-1+6х=-7,
6х=-7+1,
6х=-6,
х=-1