(33/2+1/5)+(2/3-12/17)-(1/5+5/17) (简便计算)
1个回答
(33/2+1/5)+(3/2-12/17)-(1/5+5/17)
=33/2+1/5+3/2-12/17-1/5-5/17
=(33/2+3/2)-(12/17+5/17)
=18-1
=17
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