如题所述
3.6×42.3×3.75-12.5×0.423×28
=3.6×42.3×1.25×3-1.25×42.3×2.8
=3.6×3×42.3×1.25-1.25×42.3×2.8
=10.8×42.3×1.25-1.25×42.3×2.8
=（10.8-2.8）×42.3×1.25
=8×42.3×1.25
=8×1.25×42.3
=10×42.3
=423
=3.6×42.3×1.25×3-1.25×42.3×2.8
=3.6×3×42.3×1.25-1.25×42.3×2.8
=10.8×42.3×1.25-1.25×42.3×2.8
=（10.8-2.8）×42.3×1.25
=8×42.3×1.25
=8×1.25×42.3
=10×42.3
=423
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第1个回答 2018-07-03
3.6×42.3×3.75-12.5×0.423×28
=3.6×42.3×1.25×3-1.25×10×42.3×0.28
=42.3×1.25×（3.6×3-10×0.28）
=42.3×1.25×（10.8-2.8）
=42.3×1.25×8
=42.3×（1.25×8）
=42.3×10
=423
=3.6×42.3×1.25×3-1.25×10×42.3×0.28
=42.3×1.25×（3.6×3-10×0.28）
=42.3×1.25×（10.8-2.8）
=42.3×1.25×8
=42.3×（1.25×8）
=42.3×10
=423
第2个回答 2018-07-03
3.6×42.3×3.75-12.5×0.423×28=3.6×42.3×3.75-1250×42.3×28
=42.3*(3.6*3.75-1250×28)=42.3*(13.5-35000)=-34986.5*42.3=-1479928.95
=42.3*(3.6*3.75-1250×28)=42.3*(13.5-35000)=-34986.5*42.3=-1479928.95
第3个回答 2018-07-03
那里应该是2.8追答
