【分数混合运算,4/5-3/10+1/36-(5/8-5/1-查字典问答网
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来自宋东平的问题

  【分数混合运算,4/5-3/10+1/36-(5/8-5/12)7/9-5/8-1/127/12-1/4-1/33/5-1/4+2/51/12+(5/6+3/10)1-1/2-1/31-(1/4-1/8)-(1/8-1/16)-(1/16-1/32)-(1/32-1/64)8/17+(3/5-8/17)5/8+4/9+3除8-4/93/7+4/9-3/7+5/97/24+5/19+14/19+3/24异分】

  分数混合运算,

  4/5-3/10+1/3

  6-(5/8-5/12)

  7/9-5/8-1/12

  7/12-1/4-1/3

  3/5-1/4+2/5

  1/12+(5/6+3/10)

  1-1/2-1/3

  1-(1/4-1/8)-(1/8-1/16)-(1/16-1/32)-(1/32-1/64)

  8/17+(3/5-8/17)

  5/8+4/9+3除8-4/9

  3/7+4/9-3/7+5/9

  7/24+5/19+14/19+3/24

  异分母分数加减

  1-7/9

  1/6+1/7

  2/3+1/6

1回答
2020-04-26 21:25
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  4/5-3/10+1/3

  =8/10-3/10+1/3

  =5/10+1/3

  =1/2+1/3

  =3/6+2/6

  =5/6

  6-(5/8-5/12)

  =6-(15/24-10/24)

  =6-5/24

  =5又19/24

  7/9-5/8-1/12

  =112/144-90/144-12/144

  =(112-90-12)/144

  =10/144

  =5/77

  7/12-1/4-1/3

  =7/12-3/12-4/12

  =(7-3-4)/12

  =0

  3/5-1/4+2/5

  =3/5+2/5-1/4

  =1-1/4

  =3/4

  1/12+(5/6+3/10)

  =1/12+5/6+3/10

  =1/12+10/12+3/10

  =11/12+3/10

  =55/60+18/60

  =73/60

  =1又13/60

  1-1/2-1/3

  =6/6-3/6-2/6

  =1/6

  1-(1/4-1/8)-(1/8-1/16)-(1/16-1/32)-(1/32-1/64

  =1-1/8-1/16-1/32-1/64

  =1-(8+4+2+1)/64

  =1-15/64

  =49/64

  8/17+(3/5-8/17)

  =8/17+3/5-8/17

  =3/5

  5/8+4/9+3除8-4/9

  =[(45+32)/72+3]÷(8-4/9)

  =293/72÷68/9

  =293/72×9/68

  =293/544

  3/7+4/9-3/7+5/9

  =3/7-3/7+4/9+5/9

  =1

  7/24+5/19+14/19+3/24

  =7/24+3/24+5/19+14/19

  =10/24+1

  =1又5/12

  1-7/9=2/9

  1/6+1/7=7/42+6/42=13/42

  2/3+1/6=4/6+1/6=5/6

2020-04-26 21:28:41

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