1. -x/5+x/15≤-1 ; (-3+1)x/15≤-1; -2x≤-15,; x>=15/2;2. 1/3x-2<1-1/5x ; (1/3+1/5)x<3; (8/15)x<3; x<45/83. x-(3x-1)≤x+2; -3x≤1; x>=-1/3