Question

Answer 1

\(\dfrac{1}{2}-\dfrac{2}{7}.x=\dfrac{1}{3}\\ \Rightarrow\dfrac{2}{7}.x=\dfrac{1}{6}\\\Rightarrow x=\dfrac{7}{12} \)

Answer 2

\(\dfrac{1}{2}-\dfrac{2}{7}.x=\dfrac{1}{3}\)

<=>\(\dfrac{2}{7}.x=\dfrac{1}{2}-\dfrac{1}{3}\)

<=>\(\dfrac{2}{7}.x=\dfrac{1}{6}\)

<=>\(x=\dfrac{1}{6}:\dfrac{2}{7}=\dfrac{1}{6}.\dfrac{7}{2}=\dfrac{7}{12}\)

Answer 3

\(\dfrac{2}{7}.x=\dfrac{1}{2}-\dfrac{1}{3}\)

\(\dfrac{2}{7}.x=\dfrac{1}{6}\)

\(x=\dfrac{1}{6}:\dfrac{2}{7}\)

\(x=\dfrac{7}{12}\)