\(\dfrac{7}{8}-\dfrac{1}{2}=\dfrac{7}{8}-\dfrac{4}{8}=\dfrac{7-4}{8}=\dfrac{3}{8}\)Câu trả lời: \(\dfrac{7}{8}-\dfrac{1}{2}=\dfrac{7}{8}-\dfrac{4}{8}=\dfrac{7-4}{8}=\dfrac{3}{8}\)

\(\dfrac{7}{8}-\dfrac{1}{2}\)\(=\dfrac{7}{8}-\dfrac{1\times4}{2\times4}\)\(=\dfrac{7}{8}-\dfrac{4}{8}\)\(=\dfrac{7-4}{8}\)\(=\dfrac{3}{8}\) Câu trả lời: \(\dfrac{7}{8}-\dfrac{1}{2}\)\(=\dfrac{7}{8}-\dfrac{1\times4}{2\times4}\)\(=\dfrac{7}{8}-\dfrac{4}{8}\)\(=\dfrac{7-4}{8}\)\(=\dfrac{3}{8}\)