1) -7<4х+1<7-8<4х<6-2<х<1,5-1; 0; 12) -4<=2х+3<=4-7<=2х<=1-3,5<=х<=0,5-3; -2; -1; 03) -2,5<х+1<2,5-3,5<х<1,5-3; -2; -1; 0; 14) -3<=2х-5<=32<=2х<=81<=х<=41; 2; 3; 45) -7<2+3х<7-9<3х<5-3<х<2 2/3-2; -1; 0; 1; 26) -8<=2-5х<=8-10<=-5х<=62=>х=>-1,2-1; 0; 1; 2*<= и => это больше/меньше или равно