Question

3:х=7:1/3
помогите плиз

Answer 1

$3:x=7: frac{1}{3}$
$3:x= frac{7}{1}: frac{1}{3}$
$3:x= frac{7}{1}* frac{3}{1}$
$3:x= frac{21}{1}$
$3:x=21$
$21x=3$
$x=3:21$
$x= frac{3}{21}$
$x= frac{1}{7}$
$Otvet: frac{1}{7}$

Answer 2

$frac{3}{x}= frac{7}{ frac{1}{3} }\\ frac{3}{x} =7 : frac{1}{3}\\ frac{3}{x}=7* frac{3}{1} \\frac{3}{x}=7*3$           
$3:x=21\21x=3\x= frac{3}{21} \ x= frac{1}{7}$