二十五分之三十六减十二分之五加二十五分之十三的和怎样简便运算?
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36/25-5/12+13/25
=(36+13)/25-5/12
=49/25-5/12
=(49×12)/(25×12)-(5×25)/(12×25)
=(588-125)/300
=463/300
=1又300分之163
=(36+13)/25-5/12
=49/25-5/12
=(49×12)/(25×12)-(5×25)/(12×25)
=(588-125)/300
=463/300
=1又300分之163
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