41.2×3.6+16×1又1/4+53.7×6.4 计算 清晰一点
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=41.2*(1-6.4)+16*5/4+53.7*6.4
=41.2+(53.7-41.2)*6.4+16*1.25
=41.2+1.25*64+16*1.25
=41.2+1.25*80
=41.2+100
=141.2
=41.2+(53.7-41.2)*6.4+16*1.25
=41.2+1.25*64+16*1.25
=41.2+1.25*80
=41.2+100
=141.2
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