Tính: \(\Large \dfrac{2}{7}\) \(\Large \dfrac{4}{7}\) \(\Large \dfrac{

Tính:

• A. \(\Large \dfrac{2}{7}\)
• B. \(\Large \dfrac{4}{7}\)
• C. \(\Large \dfrac{8}{21}\)
• D. \(\Large \dfrac{10}{21}\)

\(\Large \dfrac{2}{3} \times \dfrac{6}{7} = \dfrac{2 \times 6}{3 \times 7} = \dfrac{12}{21} = \dfrac{12 : 3}{21 : 3} = \dfrac{4}{7}\)

Vậy đáp án đúng là \(\Large \dfrac{4}{7}\).