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

Toán Lớp 5: 2018 x 2019 + 2019/2019 x 2020 – 2019

Toán Lớp 5: 2018 x 2019 + 2019/2019 x 2020 – 2019

Comments ( 2 )

  1. (2018 × 2019 + 2019)/(2019 × 2020 – 2019)
    = (2019 × (2018 + 1))/(2019 × (2020 – 1))
    = (2019 × 2019)/(2019 × 2019)
    = 1

  2. Giải đáp + Lời giải và giải thích chi tiết:
    $\dfrac{2018 * 2019 + 2019}{2019 * 2020 – 2019}$
    = $\dfrac{2018 * 2019 + 2019 * 1}{2019 * 2020 – 2019 * 1}$
    = $\dfrac{2019 * (2018 + 1)}{2019 * (2020 – 1)}$
    = $\dfrac{2019 * 2019}{2019 * 2019}$
    = 1

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