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已知y满足不等式(y+1)/2-y>2+(y+2)/3,化简|y+1|+|2y-1|的结果是?
人气:414 ℃ 时间:2020-02-03 14:36:19
解答

(y+1)/2-y>2+(y+2)/3
3(y+1)-6y>12+2(y+2)
-5y>13
y<-13/5
|y+1|+|2y-1|=-(1+y)-(2y-1)=-3y
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