Question

-6 phần 7 - x = 1 phần 5 - (-4 phần 5 )

Answer 1

\(-\dfrac{6}{7}-x=\dfrac{1}{5}-\left(-\dfrac{4}{5}\right)\)

\(\Rightarrow-\dfrac{6}{7}-x=\dfrac{1}{5}+\dfrac{4}{5}=1\)

\(\Rightarrow-x=1+\dfrac{6}{7}=\dfrac{7}{7}+\dfrac{6}{7}=\dfrac{13}{7}\)

\(\Rightarrow x=-\dfrac{13}{7}\)

Answer 2

     \(\dfrac{-6}{7} - x = \dfrac{1}{5} -(\dfrac{-4}{5} )\)

⇒ \(\dfrac{-6}{7} - x = 1\)

⇒ \(x = \dfrac{-6}{7} - 1\)

⇒ \(x=\dfrac{-13}{7}\)