7.6x1又4分之3+17.5x25分之6
1个回答
2012-10-07
展开全部
7.6×1又3/4+17.5×6/25
=7.6×1.75+1.75×60/25
=1.75×(7.6+12/5)
=1.75×(7.6+2.4)
=1.75×10
=17.5
=7.6×1.75+1.75×60/25
=1.75×(7.6+12/5)
=1.75×(7.6+2.4)
=1.75×10
=17.5
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