72.4×31+62×8.8算是怎么解

72.4×31+62×8.8算是怎么解
2024-12-31 15:05:42
推荐回答(2个)
回答1:

72.4×31+62×8.8
=72.4×31+31×2×8.8
=72.4×31+31×17.6
=(72.4+17.6)×31
=90×31
=2790

回答2:

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