\(\dfrac{5}{12}=\dfrac{5\times2}{12\times2}=\dfrac{10}{24};\dfrac{7}{24}\)
5/12 nhân 2 thành 10/24, giữ nguyên 7/24
\(\dfrac{5}{12}=\dfrac{5\times2}{12\times2}=\dfrac{10}{24};\dfrac{7}{24}giữ.nguyên\)
5/12=5x24/12x24=120/288
7/24=7x12/24x12=84/288