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Решите задачу:

$1) \ \ \frac{3}{5} = \frac{3*6}{5*6} = \frac{18}{30} \ \ \ \frac{5}{6} = \frac{5*5}{6*5} = \frac{25}{30}$

$2) \ \ \frac{6}{11} = \frac{6*9}{11*9} = \frac{54}{99} \ \ \ \frac{4}{9} = \frac{4*11}{9*11} = \frac{44}{99}$

$3) \ \ \frac{5}{6} = \frac{5*11}{6*11} = \frac{55}{66} \ \ \ \frac{4}{11} = \frac{4*6}{11*6} = \frac{24}{66}$

$4) \ \ \frac{7}{18} = \frac{7}{18} \ \ \ \frac{1}{6} = \frac{1*3}{6*3} = \frac{3}{18}$

$5) \ \ \frac{9}{13} = \frac{9*5}{13*5} = \frac{45}{65} \ \ \ \frac{4}{5} = \frac{4*13}{5*13} = \frac{52}{65}$

$6) \ \ \frac{5}{7} = \frac{5*4}{7*4} = \frac{20}{28} \ \ \ \frac{3}{4} = \frac{3*7}{4*7} = \frac{21}{28}$

$6) \ \ \frac{2}{15} = \frac{2}{15} \ \ \ \frac{1}{3} = \frac{1*5}{3*5} = \frac{5}{15}$

$8) \ \ \frac{5}{8} = \frac{5}{8} \ \ \ \frac{3}{4} = \frac{3*2}{4*2} = \frac{6}{8}$