Question

P.S. не могу делать​

Answer 1

Ответ:

Пошаговое объяснение:

$2.8x=9\frac{1}{3}\\ x=9\frac{1}{3} :2.8=\frac{28}{3} :\frac{28}{10} =\frac{28}{3} *\frac{10}{28} =\frac{10}{3} =3\frac{1}{3}$

$x:7.5=\frac{6}{17} \\x=7.5*\frac{6}{17} =\frac{75}{10} *\frac{6}{17} =\frac{225}{85} =\frac{45}{17} =2\frac{11}{17}$

$4\frac{1}{9} :x=7.4\\x=4\frac{1}{9} :7.4=\frac{37}{9} :\frac{74}{10} =\frac{37}{9} *\frac{10}{74} =\frac{10}{18} =\frac{5}{9}$

$9\frac{2}{11} *x=10.1\\x=10.1:9\frac{2}{11} \\x=\frac{101}{10} :\frac{101}{11} =\frac{101}{10} *\frac{11}{101} =\frac{11}{10} =1.1$