2x/3+1/4≥1/2(0.8+x/3)-1/3(x-3)

问题描述:

2x/3+1/4≥1/2(0.8+x/3)-1/3(x-3)

2x/3+1/4≥2/5+x/6-x/3+1
5x/6≥7/5-1/4
x≥69/50x
x≥1.38