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

Toán Lớp 5: A = 1/2019+1/2022 B = 1/2020+1/2021 nhanh hộ mik

Toán Lớp 5: A = 1/2019+1/2022 B = 1/2020+1/2021
nhanh hộ mik

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    Ta có 1/2019 = 1 x 2021      2019 x 2021 = 2021/4080399     Ta có 1/2021 = 1 x 20 21/ 2021 x 2019 = 2019/4080399    Kết quả 12019 + 12021 = 202/4080399 + 2019/4080399 = 4040/ 4080399
    Ta có 1/2020 = 1 x 2021/2020 x 2021 = 2021/4082420Ta có 12021 = 1 x 2020/2021 x 2020 = 2020/4082420Kết quả 1/2020 + 1/2021 = 2021/4082420 + 2020/4082420 = 4041/4082420

  2. 1.
    A = \frac{1}{2019} + \frac{1}{2022}
    A = \frac{449}{453602}
    2.
    B = \frac{1}{2020} + \frac{1}{2021}
    B = \frac{4041}{4082420}
    #huy
     

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

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