48*45/47
=(47+1)x45/47
=47x45/47+45/47
=45+45/47
=45å45/47
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=(47+1)x45/47
=47x45/47+45/47
=45+45/47
=45å45/47
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第1个回答 2016-06-27
48*45/47
=(47+1)*45/47
=47*45/47+1*45/47
=45+45/47
=45又45/47
=(47+1)*45/47
=47*45/47+1*45/47
=45+45/47
=45又45/47
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