Question

сократите дробь, используя признак делимости:1) 11/22,10/25,27/45,9/12. 2) 15/18, 24/30,28/32,21/15.

Answer 1

$frac{11}{22} = frac{1*11}{2*11} = frac{1}{2}$
$frac{10}{25} = frac{2*5}{5*5} = frac{2}{5}$
$frac{27}{45} = frac{3*9}{5*9} = frac{3}{5}$
$frac{9}{12} = frac{3*3}{4*3} = frac{3}{4}$

$frac{15}{18} = frac{5*3}{6*3} = frac{5}{6}$
$frac{24}{30} = frac{4*6}{5*6} = frac{4}{5}$
$frac{28}{32} = frac{7*4}{8*4} = frac{7}{8}$
$frac{21}{15} = frac{7*3}{5*3} = frac{7}{5} =1 frac{2}{5}$