Question

a) \(\dfrac{-4}{7}:x=\dfrac{-2}{5}\)

b) \(\dfrac{2}{3}.x+\dfrac{5}{7}=\dfrac{3}{10}\)

Answer 1

a, \(x=\dfrac{-4}{7}:\dfrac{-2}{3}\)

\(\Rightarrow x=\dfrac{6}{7}\)

b, \(\dfrac{2}{3}.x=\dfrac{3}{7}-\dfrac{5}{7}\)

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

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

Answer 2

a) \(\dfrac{-4}{7}:x=\dfrac{-2}{5}\)

             \(x=\dfrac{-4}{7}:\dfrac{-2}{5}\)

             \(x=\dfrac{10}{7}\)

b) \(\dfrac{2}{3}x+\dfrac{5}{7}=\dfrac{3}{7}\)

            \(\dfrac{2}{3}x=\dfrac{3}{7}-\dfrac{5}{7}\)

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

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

               \(x=\dfrac{-3}{7}\)