\(\Large x\) = \(\Large \dfrac{5}{13}\) \(\Large x\) = \(\Large \dfrac

• A.

  \(\Large x\) = \(\Large \dfrac{5}{13}\)

• B.

  \(\Large x\) = \(\Large \dfrac{6}{13}\)

• C.

  \(\Large x\) = \(\Large \dfrac{9}{13}\)

• D.

  \(\Large x\) = \(\Large \dfrac{4}{13}\)

\(\Large \dfrac{12}{13}– x = \dfrac{7}{13}\)

\(\Large x\) = \(\Large \dfrac{12}{13} - \dfrac{7}{13}\)

\(\Large x\) = \(\Large \dfrac{5}{13}\)

Vậy đáp án đúng là:  \(\Large x\) = \(\Large \dfrac{5}{13}\)