Question

Срочно!!! дам 20 баллов

Answer 1

Ответ:

$1\frac{1}{2}:y=4\frac{3}{4}:2\frac{3}{8}\\\\\frac{1\frac{1}{2} }{y}=\frac{4\frac{3}{4} }{2\frac{3}{8} }\\\\y*4\frac{3}{4}=1\frac{1}{2}*2\frac{3}{8} \\\\\frac{19}{4}y=\frac{3}{2}*\frac{19}{8}\\\\\frac{19}{4}y= \frac{57}{16}\\\\y=\frac{57}{16} :\frac{19}{4} \\\\y= \frac{57}{16} *\frac{4}{19} \\\\y=\frac{3}{4}*\frac{1}{1}\\\\y=\frac{3}{4} \\\\y=0,75$

Проверка:

$1\frac{1}{2}:\frac{3}{4}=4\frac{3}{4}:2\frac{3}{8} \\\\\frac{3}{2}:\frac{3}{4}=\frac{19}{4}:\frac{19}{8}\\\\ \frac{3}{2}*\frac{4}{3}=\frac{19}{4}*\frac{8}{19}\\\\\frac{1}{1}*\frac{2}{1} =\frac{1}{1}*\frac{2}{1}\\\\\frac{2}{1}=\frac{2}{1} \\\\2=2$