a) MSC: 24
\(\dfrac{2}{3}= \dfrac{2 \times 8}{3\times 8} = \dfrac{16}{24}\); \(\dfrac{5}{8}=\dfrac{5\times 3}{8\times 3}=\dfrac{15}{24}\).
b) MSC: 12
\(\dfrac{1}{4} = \dfrac{1\times 3}{4\times 3} = \dfrac{3}{12}\) ; Giữ nguyên \(\dfrac{7}{12}\).
c) MSC 48:
\(\dfrac{5}{6} = \dfrac{5 \times 8}{6\times 8} = \dfrac{40}{48}\); \(\dfrac{3}{8}= \dfrac{3\times 6}{8\times 6} = \dfrac{18}{48}\).