Question

5/9 : 2/7; 7/18 : 14/27; 3/7:21; 15:2/5; 3:5; 6:12

Answer 1

$frac{5}{9} : frac{2}{7} = frac{5*7}{9*2} = frac{35}{18} = 1frac{17}{18}\\frac{7}{18} : frac{14}{27} = frac{7*27}{18*14} = frac{1*3}{2*2} = frac{3}{4} = 0,75\\frac{3}{7} : 21 = frac{3}{7*21} = frac{1}{7*7} = frac{1}{49}\\15 : frac{2}{5} = frac{15*5}{2} = frac{75}{2} = 37frac{1}{2} = 37,5\\3:5 = frac{3}{5} = 0,6\\6:12 = frac{6}{12} = frac{1}{2} = 0,5$