\[\boxed{\ \mathbf{942\ (942)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\boxed{\mathbf{942}.\ }\]
\[1)\ \frac{1}{3} = \frac{2}{6} = \frac{6}{18} = \frac{7}{21}\]
\[2)\ \frac{2}{5} = \frac{6}{15} = \frac{10}{25} = \frac{28}{70}\]
\(3)\ \frac{6}{11} = \frac{12}{22} = \frac{30}{55} = \frac{36}{66}\)
\[4)\ \frac{13}{7} = \frac{26}{14} = \frac{130}{70} = \frac{104}{56}\]
\[5)\ \frac{80}{120} = \frac{8}{12} = \frac{2}{3} = \frac{10}{15}\]
\[6)\ \frac{30}{48} = \frac{5}{8} = \frac{10}{16} = \frac{15}{24}\]