Răspuns:
[tex]\sqrt\frac{1}{16} [/tex][tex]:(\sqrt \frac{4}{9} +\sqrt \frac{49}{36} -\sqrt \frac{9}{144} [/tex][tex])=\frac{1}{4} :(\frac{2}{3} +\frac{7}{6} -\sqrt \frac{1}{16} )[/tex][tex]=\frac{1}{4}:(\frac{2}{3}+\frac{7}{6}-\frac{1}{4})=\\
[/tex][tex]\frac{1}{4}:\frac{19}{12} =\frac{1}{4}*\frac{12}{19}=\frac{3}{19} [/tex]
