Question

thực hiện phép tính :

19/35 . 8/11 + 16/11 . 8/35 - 9/11

Answer 1

\(=\dfrac{8}{11}\left(\dfrac{19}{35}+\dfrac{16}{35}\right)-\dfrac{9}{11}=\dfrac{8}{11}-\dfrac{9}{11}=-\dfrac{1}{11}\)

Answer 2

19/35 . 8/11 + 16/11 . 8/35 - 9/11

= 152/385 + 128/385 - 9/11

= 8/11 - 9/11

= -1/11

sai mong pẹn thông cảm:>