[tex] (\frac{4}{ \sqrt{3} } + \frac{ \sqrt{27} }{3} ) * \frac{3}{ \sqrt{3} } = \\ \\ = ( \frac{4 \sqrt{3} }{3} + \frac{3 \sqrt{3} }{3} ) * \frac{3}{ \sqrt{3} }= \\ \\ = \frac{7 \sqrt{3} }{3} * \frac{3}{ \sqrt{3} } = \\ \\ = 7[/tex]
Sper ca te-am ajutat.
