解不等式组{0.5x-2(x+3)≤11① 1.5x+2(x+3)≤3 ②
问题描述:
解不等式组{0.5x-2(x+3)≤11① 1.5x+2(x+3)≤3 ②
答
0.5x-2(x+3)≤11① 1.5x+2(x+3)≤3 ②
0.5x-2x-6≤11 1.5x+2x+6≤3
-1.5x≤17 3.5x≤-3
1.5x≥-17 3.5x≤-3
-17/1.5≤x≤-3/3.5