Question

-x-2/3=-6/7

Answer 1

- x -\(\dfrac{2}{3}\)=\(\dfrac{-6}{7}\)

- x =\(\dfrac{-6}{7}\)+\(\dfrac{2}{3}\)=\(\dfrac{-4}{21}\)

Vậy x=...

Answer 2

Ta có: \(-x-\dfrac{2}{3}=-\dfrac{6}{7}\)

\(\Leftrightarrow x+\dfrac{2}{3}=\dfrac{6}{7}\)

hay \(x=\dfrac{4}{21}\)