1)0,8 (9+2х) =0,5 (2-3х) 7,2+1,6х=1-1,5х 7,2+1,6х-1+1,5х=0 3,1х+6,2=0 3,1х=-6,2 х=-2 2)3(2х+8)-(5х+2)= 0 6х+24-5х-2=0 х+22=0 х=-22