-6(-5-7х)=-8х+2 9+2(2х+1)=1
-6(-5-7х)=-8х+2 30+42х=-8х+2 42х+8х=2-30 50х=-28 х=-28/50 х=-0,56 9+2(2х+1)=1 9+4х+2=1 4х=1-9-2 4х=-10 х=-10/4 х=-2,5