
50-28.5-13.45怎么验算
2个回答
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解:
50-28.5-13.45
=50-(28.5+13.45)
=50-41.95
=8.05
验算:
8.05+13.45+28.5
=21.5+28.5
=50
50-28.5-13.45
=50-(28.5+13.45)
=50-41.95
=8.05
验算:
8.05+13.45+28.5
=21.5+28.5
=50
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