Question

-5/7.2/11+9/7.-5/11

nhanh giùm mik nha

Answer 1

= -5/7
 

Answer 2

-5/7

Answer 3

= -10/77 + -45/77

= -5/7

Answer 4

\(\dfrac{-5}{7}\times\dfrac{2}{11}+\dfrac{9}{7}\times\dfrac{-5}{11}\)

\(=\left(-\dfrac{10}{77}\right)+\left(\dfrac{-45}{77}\right)\)

\(=\dfrac{-5}{7}\)