4X-1/0.5-5-X//2
1个回答

0.4x-2-5-0.5x≤0.03-2/3x

-7-0.1x≤0.03-2/3x

2/3x-1/10≤7.03

20-3/10x≤7.03

17/10x≤7.03

x≤10/17*7.03

x≤703/170≈4.135294118≈4.14