解不等式组{3(1-x)>2(x+9),x-3⼀0.5- 3.5x+1.4⼀0.7≤-14

2025-01-31 07:29:52
推荐回答(1个)
回答1:

(1)
3(1-x)>2(x+9),
3-3x>2x+18
-5X>15
X