解不等式组X/2-2(X+3)

问题描述:

解不等式组X/2-2(X+3)

x/2-2(x+3)≤11 (1)3x/2+2(x+3)≤3 (2)(1)×2得:x-4(x+3)≤22x-4x-12≤22x-4x≤22+12-3x≤34x≥-34/3(2)×2得:3x+4(x+3)≤63x+4x+12≤63x+4x≤6-127x≤-6x≤-6/7不等式组的解为 -34/3≤x≤-6/7...