Question

So sánh: 12/5 và 19/12

Answer 1

\(\dfrac{12}{5}=\dfrac{12.12}{5.12}=\dfrac{144}{60};\dfrac{19}{12}=\dfrac{19.5}{12.5}=\dfrac{95}{60}\)  \(\Rightarrow\dfrac{12}{5}>\dfrac{19}{12}\)

Answer 2

 \(\dfrac{12}{5}=\dfrac{12.12}{5.12}=\dfrac{144}{60}\)

 \(\dfrac{19}{12}=\dfrac{19.5}{12.5}=\dfrac{95}{60}\)

 Vì \(\dfrac{144}{60}>\dfrac{95}{60}\) nên \(\dfrac{12}{5}>\dfrac{19}{12}\)