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3,6*42,3*3,75-12,5*0,425*28
人气:254 ℃ 时间:2019-12-10 04:08:05
解答
3.6×42.3×3.75-12.5×0.423×28
=3.6×42.3×3.75-12.5×42.3×0.28
=42.3×1.25×(10.8-2.8)
=42.3×(1.25×8)
=423
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