{5x-2>3(x+1),1/2x-2≤7-5/2x; {4(x-3)-5x≤-18,(2x-3)/3-(x+1)/2

问题描述:

{5x-2>3(x+1),1/2x-2≤7-5/2x; {4(x-3)-5x≤-18,(2x-3)/3-(x+1)/2

(1)5x-2>3(x+1) →5x-2>3x+3 →2x>5 →x>5/21/2x-2≤7-5/2x →1/2x+5/2x≤9 →3x≤9 →x≤3 所以5/2<x...