7 × $$5\frac{7}{1}$$ = 7 × $$\frac{12}{1}$$ = $$\frac{84}{1}$$ = 84
$$\frac{3}{8}$$ × 2 = $$\frac{6}{8}$$ = $$\frac{3}{4}$$
$$\frac{1}{5}$$ × $$\frac{2}{3}$$ = $$\frac{2}{15}$$
$$\frac{4}{7}$$ × $$\frac{1}{4}$$ = $$\frac{4}{28}$$ = $$\frac{1}{7}$$
$$2\frac{3}{5}$$ × 5 = $$\frac{13}{5}$$ × 5 = $$\frac{65}{5}$$ = 13
$$\frac{5}{6} \cdot x = 10$$
$$x = 10 : \frac{5}{6}$$
$$x = 10 \cdot \frac{6}{5}$$
$$x = \frac{60}{5}$$
$$x = 12$$
Нет
$$\left(\frac{3}{5}\right)^2 = \frac{9}{25}
eq \frac{3}{25}$$
Да
$$\frac{1}{3} \cdot 50\% = \frac{1}{3} \cdot \frac{50}{100} = \frac{1}{3} \cdot \frac{1}{2} = \frac{1}{6}$$