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

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

人气：318 ℃　时间：2020-02-04 05:51:56

解答

（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...