(2х-5)/(х²-6х-7)-1/(х-3)≤0((2х-5)(х-3)-(х²-6х-7))/(х²-6х-7)(х-3)≤0(2х²-6х-5х+15-х²+6х+7)/(х²-6х-7)(х-3)≤0(х²-5х+22)/(х+1)(х-7)(х-3)≤0х²-6х-7=(х+1)(х-7)х1+х2=6 и х1*х2=-7⇒х1=-1 и х2=7х²-5х+22>0 при любом ч, т.к. D<0 _ + _ +_________________________________________________ -1 3 7x∈(-≈;-1) U (3;7)