Question

решите уравнения 2/9×X=5/12; 4/15 ×y=2/5; 3/5×x=6; 7/8×y=14; 3/7×x=1 4/5; 9/10×y=4 1/2

Answer 1

$frac{2}{9}*x=frac{5}{12}$
$x=frac{5}{12}* frac{9}{2}$
$x=frac{45}{24}$
$x=1frac{21}{24}$
$x=1frac{7}{8}$

$frac{4}{15}*y=frac{2}{5}$
$y=frac{2}{5}* frac{15}{4}$
$y=frac{1}{1}* frac{3}{2}$
$y=frac{3}{2}$

$frac{3}{5}*x= 6$
$x= 6* frac{5}{3}$
$x=frac{6}{1}*frac{5}{3}$
$x=frac{2}{1}*frac{5}{1}$
$x=10$

$frac{7}{8}*y=14$
$y=frac{14}{1}* frac{8}{7}$
$y=frac{2}{1}* frac{8}{1}$
$y=16$

$frac{3}{7}*x= 1frac{4}{5}$
$x=frac{9}{5}*frac{7}{3}$
$x=frac{63}{15}$
$x=4frac{1}{5}$

$frac{9}{10}*y=4frac{1}{2}$
$y=frac{9}{2}*frac{10}{9}$
$y=frac{1}{1}*frac{5}{1}$
$y=5$