d.\(\dfrac{2}{7}\)
b.\(\dfrac{12}{8}\)
\(\dfrac{1}{2}\) rồi sao nữa ạ
=\(\dfrac{6}{15}\)
số hữu tỉ
\(1:4=\dfrac{1}{4}\)
\(3:5=\dfrac{3}{5}\)
\(\dfrac{5}{30}=\dfrac{1}{6}\)
\(\dfrac{3}{5}=\dfrac{3}{5}\)
\(\dfrac{3}{7}=\dfrac{9}{21}\)