Приведите к общему знаменателю дроби \(\frac{2}{7}\) и \(\frac{3}{8}\)
\(\frac{16}{56}\) и \(\frac{21}{56}\)
\(\frac{2}{56}\) и \(\frac{3}{56}\)
\(\frac{2}{15}\) и \(\frac{3}{15}\)