Question

so sánh hai phân số 

\(\dfrac{4}{9}\) và \(\dfrac{5}{12}\)

Answer 1

\(MSC:36\\ \dfrac{4}{9}=\dfrac{4.4}{9.4}=\dfrac{16}{36}\\ \dfrac{5}{12}=\dfrac{5.3}{12.3}=\dfrac{15}{36}\\ 16>15\\ =>\dfrac{4}{9}>\dfrac{5}{12}\)

Answer 2

4/9=16/36

5/12=15/36

=>4/9>5/12

Answer 3

\(MSC:36\)

\(\dfrac{4}{9}=\dfrac{16}{36};\dfrac{5}{12}=\dfrac{15}{36}\)

\(\Rightarrow\dfrac{4}{9}>\dfrac{5}{12}\)

Answer 4

\(MSC:36\)

\(\dfrac{4}{9}=\dfrac{16}{36}>\dfrac{5}{12}=\dfrac{15}{36}\)

\(\Rightarrow\dfrac{4}{9}>\dfrac{5}{12}\)

Answer 5

MCNN: 36

Quy đồng: \(\dfrac{4}{9}=\dfrac{4\times4}{9\times4}=\dfrac{16}{36};\dfrac{5}{12}=\dfrac{5\times3}{12\times3}=\dfrac{15}{36}\)

Vì \(16>15\) nên \(\dfrac{16}{36}>\dfrac{15}{36}\)

Vậy \(\dfrac{4}{9}>\dfrac{5}{12}\)