寒假作业p40最后一题咋做53x6/7 10/11=28 25x9 7/8 16x7/15 76x4/75=53x(1-1/7) =28-28/11 =25x9 7/8 =(15+1)x7/15 =75x4/75+口=53-53/7 =25 5/11 =25x10-25x口 =7 7/15 =口=45 3/7 =口急急

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寒假作业p40最后一题咋做53x6/7 10/11=28 25x9 7/8 16x7/15 76x4/75=53x(1-1/7) =28-28/11 =25x9 7/8 =(15+1)x7/15 =75x4/75+口=53-53/7 =25 5/11 =25x10-25x口 =7 7/15 =口=45 3/7 =口急急
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寒假作业p40最后一题咋做53x6/7 10/11=28 25x9 7/8 16x7/15 76x4/75=53x(1-1/7) =28-28/11 =25x9 7/8 =(15+1)x7/15 =75x4/75+口=53-53/7 =25 5/11 =25x10-25x口 =7 7/15 =口=45 3/7 =口急急
寒假作业p40最后一题咋做
53x6/7 10/11=28 25x9 7/8 16x7/15 76x4/75
=53x(1-1/7) =28-28/11 =25x9 7/8 =(15+1)x7/15 =75x4/75+口
=53-53/7 =25 5/11 =25x10-25x口 =7 7/15 =口
=45 3/7 =口

寒假作业p40最后一题咋做53x6/7 10/11=28 25x9 7/8 16x7/15 76x4/75=53x(1-1/7) =28-28/11 =25x9 7/8 =(15+1)x7/15 =75x4/75+口=53-53/7 =25 5/11 =25x10-25x口 =7 7/15 =口=45 3/7 =口急急
1\8 246 7\8
1x4\75 4 4\75