Question

ПОМОГИТЕ!!!! Сократите дробь-1068/1869,486/729,1048/1834,516/1290,18/30,20/50,54/63 и 28/70. Заранее спасибо

Answer 1

$frac{1068}{1869}= frac{2*2*3*89}{3*7*89}=frac{2*2}{7}=frac{4}{7}.$
$frac{486}{729}= frac{2*3*3*3*3*3}{3*3*3*3*3*3}=frac{2}{3}.$
$frac{1048}{1834}= frac{2*2*2*131}{2*7*131}=frac{2*2}{7}=frac{4}{7}.$
$frac{516}{1290}= frac{2*2*3*43}{2*3*5*43}=frac{2}{5}.$
$frac{18}{30}= frac{2*3*3}{2*3*5}=frac{3}{5}.$
$frac{20}{50}=frac{2}{5}.$
$frac{54}{63}= frac{6*9}{7*9}=frac{6}{7}.$
$frac{28}{70}= frac{2*14}{5*14}=frac{2}{5}.$