Question

aloo cả lò nhà mik ơi giải hộ tui vs ạ

(-1/5+3/7):2/11+(-4/5+4/7):2/11

Answer 1

=11/2(-1/5+3/7-4/5+4/7)

=11/2(1-1)

=0

Answer 2

\(\left(\dfrac{-1}{5}+\dfrac{3}{7}\right):\dfrac{2}{11}+\left(\dfrac{-4}{5}+\dfrac{4}{7}\right):\dfrac{2}{11}\) 

\(=\dfrac{8}{35}:\dfrac{2}{11}+\dfrac{-8}{35}:\dfrac{2}{11}\) 

\(=\dfrac{2}{11}:\left(\dfrac{8}{35}+\dfrac{-8}{35}\right)\) 

\(=\dfrac{2}{11}:0=0\)