7x+10 (х-3,1)=16x-3 (8-x)
7х+10х-31=16х-24+3х 17х-31=19х-24 17х-19х=31-24 -2х=7 х=-3,5
7x+10x-31=16x-24+3x 17x-16x-3x=-24+31 -2x=7 X=-7/2 X=-3,5