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

Toán Lớp 5: Tính nhannh : 2022 x 2021 – 22/2000 + 2022 x 2020 GIÚP MÌNH VS Ạ

Toán Lớp 5: Tính nhannh : 2022 x 2021 – 22/2000 + 2022 x 2020
GIÚP MÌNH VS Ạ

Comments ( 2 )

  1. {2022 × 2021 – 22}/{2000 + 2022 × 2020}
    = {2022  × 2021 – 22}/{2000 + 2022 × (2021 – 1) }
    = {2022  × 2021 – 22}/{2000 + 2022 × 2021 – 2022}
    = {2022× 2021 -22}/{2022 × 2021 -22}
    = 1
    Vậy {2022 × 2021 – 22}/{2000 + 2022 × 2020} =1

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

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