Question

So sánh

\(\frac{631}{671}\) và \(\frac{63}{67}\)

Answer 1

\(\frac{63}{67}=\frac{630}{670}\)

Ta có : \(\frac{631}{671}=1-\frac{40}{671}\)

            \(\frac{630}{670}=1-\frac{40}{670}\)

Vì \(\frac{40}{671}< \frac{40}{670}\) nên \(\frac{631}{671}>\frac{63}{67}\)

Answer 2

Ta có:

\(\frac{631}{671}>\frac{630}{670}=\frac{63}{67}\)

Vậy \(\frac{631}{671}>\frac{63}{67}\)