-x-2/3=-6/7
-x = -6/7 + 2/3
-x = -4/21
Vậy x = -4/21
\(-x-\frac{2}{3}=-\frac{6}{7}\)
\(-x=-\frac{6}{7}+\frac{2}{3}\)
\(-x=\frac{-18}{21}+\frac{14}{21}\)
\(-x=\frac{-4}{21}\)
\(\Rightarrow x=\frac{4}{21}\)
Vậy \(x=\frac{4}{21}\)
\(-x-\frac{2}{3}=\frac{-6}{7}\)
\(\Rightarrow-x=\frac{-6}{7}+\frac{2}{3}\)
\(\Rightarrow-x=\frac{-4}{21}\)
\(\Rightarrow x=\frac{4}{21}\)
Vậy \(x=\frac{4}{21}\)
_Chúc bạn học tốt_
\(-x-\frac{2}{3}=-\frac{6}{7}\)
\(\Leftrightarrow-x=-\frac{6}{7}+\frac{2}{3}\)
\(\Leftrightarrow-x=-\frac{4}{21}\)
\(\Leftrightarrow x=\frac{4}{21}\)