tính biểu thức: 18/28 *12/30*13/22*14/26*14/26*15/32*16/24

0 bình luận về “tính biểu thức: 18/28 *12/30*13/22*14/26*14/26*15/32*16/24”

1. 18/28 *12/30*13/22*14/26*14/26*15/32*16/24=

   9/35*13/22*14/26*14/26*15/32*16/24=

   117/770*14/26*14/26*15/32*16/24=

   9/110*14/26*15/32*16/24=

   63/1430*15/32*16/24=

   189/9152*16/24=

   63/4576

    

    

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2. `18/28 *12/30*13/22*14/26*14/26*15/32*16/24`

   `=9/14 *2/5*13/22*7/13*7/13*15/32*2/3`

   `=3/22*7/13*3/16`
   `=(63)/(4576)`

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