6х-4-2(5х-11)=6х-4-10х+22=6х-10х+16=(6-10)х+16=-4х+16
6(х-2)-(3х-12)=6х-12-3х+12=(6-3)х=3х
х-4-2(3х-12)=х-4-6х+24=(1-6)х+20=-5х+20
5(3х+2)-2(х-3)=15х+10 -2х+6=(15-2)х+16=13х+16
9(2х-20)-6(3х-30)=18х-180-18х+180=(18-18)х
107 задача. 109 не помещается
(6.2х+3, 85) *6, 2=81, 53
38.44+23.87=81.53
38.44х=81.53-23.87
38.44х=57.66
х=1, 5