Tính:$\frac{1978.2021+2022.21+2000}{1980.2021-1978.2021}$ \frac{1978.2021+2022.21+2000}{1980.2021-1978.2021}

0 bình luận về “Tính:$\frac{1978.2021+2022.21+2000}{1980.2021-1978.2021}$ \frac{1978.2021+2022.21+2000}{1980.2021-1978.2021}”

1. $\frac{1978 . 2021 + 2022 . 21 + 2000}{1980 . 2021 – 1978 . 2021}$ 

   = $\frac{2021 . 1978 + ( 2021 + 1 ) . 21 + 2000}{2021 . ( 1980 – 1978 )}$ 

   = $\frac{2021 . 1978 + 2021 . 21 + 21 + 2000}{2021 . 2}$ 

   = $\frac{2021 . 1978 + 2021 . 21 + 2021 }{2021 . 2}$  

   = $\frac{2021 . ( 1978 + 21 + 1 )}{2021 . 2}$   

   =  $\frac{2021 . 2000}{2021 . 2}$   

   = 1000

    

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