作业帮1250X0.037+0.125×160+12.5×2.7
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1250X0.037+0.125×160+12.5×2.7
1250X0.037+0.125×160+12.5×2.7
1250X0.037+0.125×160+12.5×2.7
=12.5x3.7十12.5x1.6十12.5x2.7
=12.5x(3.7十1.6十2.7)
=12.5x8
=l00
1250X0.037+0.125×160+12.5×2.7
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