a: 1/2=15/30
1/3=10/30
3/5=18/30
Quy đồng các phân số thành 15/30, 10/30 và 18/30
Học tốt
\(\dfrac{1\times15}{2\times15}=\dfrac{15}{30};\dfrac{1\times10}{3\times10}=\dfrac{1}{30};\dfrac{3\times6}{5\times6}=\dfrac{18}{30}\)
\(\dfrac{1}{2}=\dfrac{15}{30};\dfrac{1}{3}=\dfrac{10}{30};\dfrac{3}{5}=\dfrac{18}{30}\)
\(MSC:30\)
\(\dfrac{1.15}{2.15}=\dfrac{15}{30}\)
\(\dfrac{1.10}{3.10}=\dfrac{10}{30}\)
\(\dfrac{3.6}{5.6}=\dfrac{18}{30}\)
\(\dfrac{1}{2}=\dfrac{15}{30}\)
\(\dfrac{1}{3}=\dfrac{10}{30}\)
\(\dfrac{3}{5}=\dfrac{18}{30}\)
1/2= 1x3x5/2x3x5 =15/30
1/3=1x2x5/3x2x5 = 10/30
3/5=3x2x3/5x2x3 = 18/30