1) 5x-7/6x - x-3/6x + 2x-8/6x = 5х-7-х +3+2х-8/6х=6х-12/6х=-12;
2) 8y-5/7y - 2y-1/7y - 10-y/7y=8у-5-2у+1-10+у/7у= 7у-14//7у=-14
1) 5x-7/6x - x-3/6x + 2x-8/6x = 5х-7-х +3+2х-8/6х=6х-12/6х=-12;
2) 8y-5/7y - 2y-1/7y - 10-y/7y=8у-5-2у+1-10+у/7у= 7у-14//7у=-14