Question

Answer 1

Lời giải:
$A=\frac{3}{11}\times \frac{-5}{7}+\frac{-5}{7}\times \frac{8}{11}+\frac{19}{7}: \frac{2021}{2022}+2023$

$=\frac{-5}{7}\times (\frac{3}{11}+\frac{8}{11})+\frac{19}{7}\times \frac{2022}{2021}+2023$

$=\frac{-5}{7}\times 1+\frac{38418}{14147}+2023$

$=\frac{28313}{14147}+2023=2023\frac{28313}{14147}$