能巧算的就巧算:87.25-(3.47-12.75+6.53)
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能巧算的就巧算:87.25-(3.47-12.75+6.53)能巧算的就巧算:87.25-(3.47-12.75+6.53)能巧算的就巧算:87.25-(3.47-12.75+6.53)87.25-(
能巧算的就巧算:87.25-(3.47-12.75+6.53)
能巧算的就巧算:87.25-(3.47-12.75+6.53)
能巧算的就巧算:87.25-(3.47-12.75+6.53)
87.25-(3.47-12.75+6.53)
=87.25-3.47+12.75-6.53
=(87.25+12.75)-(3.47+6.53)
=100-10
=90
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87.25-(3.47-12.75+6.53)
=87.25+12.75-(3.47+6.53)
=100-10
=90
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87.25-(3.47-12.75+6.53)
=87.25-3.47+12.75-6.53
=(87.25+12.75)-(3.47+6.53)
=100-10
=90
能巧算的就巧算:87.25-(3.47-12.75+6.53)
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