Question

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

Answer 1

 -x - 2/3 = -6/7

-x = -6/7 + 2/3

-x = -4/21

x = 4/21

Answer 2

  

Answer 3

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

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

\(\Rightarrow-x=\dfrac{-18}{21}+\dfrac{14}{21}\)

\(\Rightarrow-x=\dfrac{-4}{21}\)

\(\Rightarrow x=\dfrac{4}{21}\)

Vậy: \(x=\dfrac{4}{21}\)

#\(Toru\)