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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 4: help my rút gọn ps 121212/151515 136136/117117 20212021/20222022

Toán Lớp 4: help my
rút gọn ps 121212/151515 136136/117117 20212021/20222022

Comments ( 2 )

  1. Giải đáp:12/15
    136/117
    2021/2022
    giải thik:
    121212/151515÷10101
    =12/15
    136136/117117÷1001
    =136/117
    20212021/20222022÷10001
    =2021/2022
    $\text{ Chúc Học Tốt, Xin Hay Nhất}$
     

  2. 121212/151515 = ( 121212 : 10101 )/( 151515 : 10101 ) = 12/15 = ( 12 : 3 )/( 15 : 3 ) = 4/5
    136136/117117 = ( 136136 : 1001 )/( 117117 : 1001 ) = 136/117
    20212021/20222022 = ( 20212021 : 10 001 )/( 20222022 : 10001 ) = 2021/2022

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222-9+11+12:2*14+14 = ? ( )