Răspuns :
([tex]( \frac{7}{2 \sqrt{6} } - \frac{6}{ \sqrt{24} } + \frac{5}{ \sqrt{54} }) x2 ( \frac{13}{ \sqrt{34} } ) x^{-1} = ( \frac{7}{2 \sqrt{6} } - \frac{6}{2 \sqrt{6} } + \frac{5}{3 \sqrt{6} } ) x2 ( \frac{ \sqrt{34} }{13} )[/tex]