y x 2021 – y = 2020 x 2021 + 2020

2 bình luận về “y x 2021 – y = 2020 x 2021 + 2020”

1. y × 2021 − y = 2020 × 2021 + 2020

   y × ( 2021 − 1 ) = 2020 × ( 2021 + 1 )

   y × 2020 = 2020 × 2022

   y = (2020 × 2022)/ 2020

   y = 2022

   -> Vậy y = 2022

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2. $y \times 2021 – y = 2020 \times 2021+2020$

   $y \times(2021-1)=2020 \times (2021+1)$

   $y \times 2020 = 2020 \times 2022$

   $y= \dfrac{2020 \times 2022}{2020}$

   $y=2022$

   Vậy y=2022

   Chúc bạn học tốt !!!

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