x-3(x-2)≥4解:x-3x+6≥4 -2x≥-2 x≤1
解:x-3x+6≥4,-2x≥-2,x≤1(2)式两边都乘以10,20x-2<10x+5,10x<7,x<7/10所以,不等式的解集是x<7/10
由x-3(x-2)≥4 解得x≤1,由2x-1/5<x+1/2,解得X<7/10,然后取交集的x≤1