(x+2)/(3-x)-1<=0(x+2-3+x)/(3-x)<=0(2x-1)/(3-x)<=0即(2x-1)(3-x)<=0所以(2x-1)(x-3)>=0分母不等于0所以x≤1/2,x>3
(x+2)/(3-x)-1≤0(2x-1)/(3-x)≤0(2x-1)/(x-3)≤01/2≤x≤3
