化简:|1-3x|+|1+2x|
2个回答
(1)当x>1/3时,原式=1-3x+1+2x=2-x
(2)当-1/2≤x≤1/3时,原式=3x-1+1+2x=5x
(3)当x<-1/2时,原式=3x-1-1-2x=x-2
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