1/2=6/12
2/3=8/12
5/6=10/12
7/12=7/12
=>Phân số lớn nhất là 5/6
\(\dfrac{1}{2}=\dfrac{6}{12}\)
\(\dfrac{2}{3}=\dfrac{8}{12}\)
\(\dfrac{5}{6}=\dfrac{10}{12}\)
\(\dfrac{7}{12}\)
10/12 lớn nhất => 5/6 là phân số lớn nhất
\(\dfrac{1}{2};\dfrac{2}{3};\dfrac{5}{6};\dfrac{7}{12}\)
\(\Rightarrow\dfrac{1}{2}=\dfrac{1\times6}{2\times6}=\dfrac{6}{12}\)
\(\Rightarrow\dfrac{2}{3}=\dfrac{2\times4}{3\times4}=\dfrac{8}{12}\)
\(\Rightarrow\dfrac{5}{6}=\dfrac{5\times2}{6\times2}=\dfrac{10}{12}\)
\(\Rightarrow\dfrac{7}{12}\)
\(\Leftrightarrow Phân.số.lớn.nhất.là.phân.số\dfrac{10}{12}.hay\dfrac{5}{6}\)