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

Toán Lớp 5: 4174342 – 2018 x 2019 ===========- 4176361 – 2019 x 2019 Tính nhanh ( giúp iem dzới , mai thi gòi )

Toán Lớp 5: 4174342 – 2018 x 2019
———————————-
4176361 – 2019 x 2019
Tính nhanh ( giúp iem dzới , mai thi gòi )

Comments ( 2 )

  1. Giải đáp :
    $\dfrac{4174342 – 2018 × 2019}{4176361 – 2019 × 2019}$
    $\dfrac{4174342 – 2018 × 2019}{4176361 – (2018 × 2019 + 2019)}$
    $\dfrac{4174342 – 2018 × 2019}{4176361 – (2018 × 2019 + 2019)}$
    $\dfrac{4174342 – 2018 × 2019}{4176361 – 2018 × 2019 – 2019}$
    $\dfrac{4174342 – 2018 × 2019}{4174342 – 2018 × 2019}$
    = 1

  2. Giải đáp:
    1.
    Lời giải và giải thích chi tiết:
    $\dfrac{4174342-2018\times2019}{4176361-2019\times2019}\\=\dfrac{4174342-2018\times2019}{4176361-(2018+1)\times2019}\\=\dfrac{4174342-2018\times2019}{4176361-(2018\times2019+2019)}\\=\dfrac{4174342-2018\times2019}{4176361-2018\times2019-2019}\\=\dfrac{4174342-2018\times2019}{(4176361-2019)-2018\times2019}\\=\dfrac{4174342-2018\times2019}{4174342-2018\times2019}\\=1$

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