2017 x 2018+ 2019 ___________________ 2018x 2019 -2017 28/08/2021 Bởi Brielle 2017 x 2018+ 2019 ___________________ 2018x 2019 -2017
Ta có: $\dfrac{2017 \times 2018 + 2019}{2018 \times 2019 – 2017}$ $= \dfrac{2017 \times 2018 + 2019}{2018 \times 2017 + 2018 \times 2 – 2017}$ $= \dfrac{2017 \times 2018 + 2019}{2018 \times 2017 + 4036 – 2017}$ $= \dfrac{2017 \times 2018 + 2019}{2018 \times 2017 + 2019}$ $= 1$ Bình luận
4072325/4072325
= 1
Giải thích các bước giải:
Ta có:
$\dfrac{2017 \times 2018 + 2019}{2018 \times 2019 – 2017}$
$= \dfrac{2017 \times 2018 + 2019}{2018 \times 2017 + 2018 \times 2 – 2017}$
$= \dfrac{2017 \times 2018 + 2019}{2018 \times 2017 + 4036 – 2017}$
$= \dfrac{2017 \times 2018 + 2019}{2018 \times 2017 + 2019}$
$= 1$