Question

21/98 20/84 ,15/27 28/48 15/54 28/48 к наименьшему общему знаменателю СРОЧНО НАДО

Answer 1

1)
$frac{21}{98} = frac{3}{14} = frac{3*3}{14*3} = frac{9}{42}$
$frac{20}{84}= frac{5}{21} = frac{5*2}{21*2} = frac{10}{42}$
2)
$frac{15}{27} =frac{5}{9} = frac{5*4}{9*4} = frac{20}{36}$
$frac{28}{48} = frac{7}{12} = frac{7*3}{12*3}= frac{21}{36}$
$frac{15}{54} = frac{5}{18}= frac{5*2}{18*2} =frac{10}{36}$
$frac{28}{48} = frac{7}{12} = frac{7*3}{12*3}= frac{21}{36}$

Answer 2

спасибо