Question

\(-\dfrac{3}{7}-\dfrac{4}{7}:x=-2\)

Answer 1

\(-\dfrac{4}{7}:x=-\dfrac{3}{7}+2\)

\(-\dfrac{4}{7}:x=\dfrac{11}{7}\)

-> x= \(\dfrac{-4}{11}\)

Answer 2

Ta có: \(\dfrac{-3}{7}-\dfrac{4}{7}:x=-2\)

\(\Leftrightarrow\dfrac{4}{7}:x=\dfrac{-3}{7}+2=\dfrac{11}{7}\)

hay \(x=\dfrac{11}{7}:\dfrac{4}{7}=\dfrac{11}{7}\cdot\dfrac{7}{4}=\dfrac{11}{4}\)

Vậy: \(x=\dfrac{11}{4}\)