Question

Знайдіть добуток 1) 7*4/24 2) 8/13*26 3) 1 2/13 * 1 5/8 * 1 1/7

Answer 1

1.

$7 \times \frac{4}{24} = \frac{7 \times 4}{24} = \frac{7 \times 1}{6} = \frac{7}{6} = 1 \frac{1}{6}$

2.

$\frac{8}{13} \times 26 = \frac{8 \times 26}{13} = \frac{8 \times 2}{1} = 16$

3.

$1 \frac{2}{13} \times 1 \frac{5}{8} \times 1 \frac{1}{7} = \frac{15}{13} \times \frac{13}{8} \times \frac{8}{7} = \frac{15 \times 13 \times 8}{13 \times 8 \times 7} = \frac{15 \times 1 \times 1}{1 \times 1 \times 7} = \frac{15}{7} = 2 \frac{1}{7}$