Tìm x, biết: \(\Large x\) : \(\Large \dfrac{7}{11}\) = \(\Large \dfrac

Tìm x, biết: 

\(\Large x\) : \(\Large \dfrac{7}{11}\) = \(\Large \dfrac{4}{7}\) + \(\Large \dfrac{1}{7}\)

• A.

  \(\Large \dfrac{5}{3}\)

• B.

  \(\Large \dfrac{15}{11}\)

• C.

  \(\Large \dfrac{5}{11}\)

• D.

  \(\Large \dfrac{5}{7}\)

\(\Large x\) : \(\Large \dfrac{7}{11}\) = \(\Large \dfrac{4}{7}\) + \(\Large \dfrac{1}{7}\)
\(\Large x\) : \(\Large \dfrac{7}{11}\) = \(\Large \dfrac{5}{7}\)
\(\Large x\) = \(\Large \dfrac{5}{7}\) x \(\Large \dfrac{7}{11}\)
\(\Large x\) = \(\Large \dfrac{5}{11}\)