Ответ:

2/3 • 6/7 : 4/7 = 2/3 • 6/7 = 2/1 • 2/7 = 4/7

4/7 : 4/7 = 4/7 • 7/4 = 1/1 • 1/1 = 1

Verified answer

Ответ:

[tex]1[/tex]

Пошаговое объяснение:

[tex] \frac{2}{3} \times \frac{6}{7} \div \frac{4}{7} = \frac{2 \times 6}{3 \times 7} \div \frac{4}{7} = \frac{12}{21} \div \frac{4}{7} = \frac{12 \times 7}{21 \times 4} = \frac{84}{84} = 1[/tex]