\(-x-\frac{2}{3}=-\frac{6}{7}\)
⇔\(-x=-\frac{6}{7}+\frac{2}{3}\)
⇔-x= \(-\frac{4}{21}\)
⇔x =\(\frac{4}{21}\)
-x - \(\frac{2}{3}=-\frac{6}{7}\)
-x \(=-\frac{6}{7}+\frac{2}{3}\)
-x \(=-\frac{4}{21}\)
⇒ x \(=\frac{4}{21}\)
-x - \(\frac{2}{3}\) = \(\frac{-6}{7}\)
-x = \(\frac{-6}{7}\) + \(\frac{2}{3}\)
-x = \(\frac{-4}{21}\)
⇒x = \(\frac{4}{21}\)
Vậy x = \(\frac{4}{21}\)
-x-\(\frac{2}{3}\)=\(\frac{-6}{7}\)
-x = \(\frac{-6}{7}\)+ \(\frac{2}{3}\)
-x = \(\frac{-18}{21}\)+\(\frac{14}{21}\)
-x = \(\frac{4}{21}\)
\(\Rightarrow\)x= \(\frac{4}{21}\)
