Question

Атветьте на вапрос по намерам

Answer 1

Ответ:

1)

$3 \times \frac{1}{60} = \frac{3}{60} = \frac{3 \times 1}{3 \times 20} = \frac{1}{20}$

2)

$\frac{2}{3} \times \frac{1}{2} = \frac{1}{3}$

3)

$\frac{5}{7} \times 1 \frac{2}{5} = \frac{5}{7} \times \frac{7}{5} = 1$

4)

$3 \times \frac{5}{7} = \frac{15}{7}$

5)

$1 \frac{1}{7} \times \frac{1}{2} = \frac{8}{7} \times \frac{1}{2} = \frac{4}{7}$

6)

$2 \frac{1}{5} \times 2 \frac{3}{11} = \frac{11}{5} \times \frac{25}{11} = \\ = \frac{25}{5} = 5$

7)

$\frac{18}{55} \times \frac{11}{54} = \frac{1}{15}$

8)

$2 \frac{1}{6} \times \frac{3}{26} = \frac{13}{6} \times \frac{3}{26} = \frac{1}{4}$