一又4/5÷1又1/3+2.3×0.075+0.37×1-25%的差
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2017-07-20
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1又4/5÷1又1/3+2.3×0.075+0.37×(1-25%)
=9/5÷4/3+2.3×0.075+0.37×0.75
=9/5×3/4+2.3×0.075+3.7×0.075
=27/20+(2.3+3.7)×0.075
=1.35+6×0.075
=1.35+0.45
=1.8
=9/5÷4/3+2.3×0.075+0.37×0.75
=9/5×3/4+2.3×0.075+3.7×0.075
=27/20+(2.3+3.7)×0.075
=1.35+6×0.075
=1.35+0.45
=1.8
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