A

có ai giỏi hình ko

5800

C)\(\dfrac{-5}{6}-x=\dfrac{7}{12}+\dfrac{-1}{3}\)

   \(\dfrac{-5}{6}-x=\dfrac{7}{12}+\dfrac{-4}{12}\)

    \(\dfrac{-5}{6}-x=\dfrac{1}{4}\)

    \(x=\dfrac{-5}{6}-\dfrac{1}{4}\)

    \(x=\dfrac{-20}{24}-\dfrac{6}{24}\)

    \(x=\dfrac{14}{24}=\dfrac{7}{12}\)

B