\(\dfrac{x}{27}=\dfrac{2}{9}-\dfrac{1}{3}\)
\(\Leftrightarrow\dfrac{x}{27}=\dfrac{2}{9}-\dfrac{3}{9}\)
\(\Leftrightarrow\dfrac{x}{27}=-\dfrac{1}{9}\)
\(\Leftrightarrow9x=-27\)
\(\Leftrightarrow x=-\dfrac{27}{9}\)
\(\Leftrightarrow x=-3\)
\(\dfrac{x}{27}=\dfrac{2}{9}-\dfrac{1}{3}\)
\(\Leftrightarrow\dfrac{x}{27}=\dfrac{2}{9}-\dfrac{3}{9}\)
\(\Leftrightarrow\dfrac{x}{27}=-\dfrac{1}{9}\)
Suy ra :
\(9x=-27\)
\(\Rightarrow x=-3\)
\(\dfrac{x}{27}=\dfrac{2}{9}-\dfrac{1}{3}\)
\(\dfrac{x}{27}=\dfrac{-1}{9}\)
\(x=\dfrac{27.-1}{9}=\dfrac{-27}{9}\)
\(x=-3\)
