Question

so sánh 2 phân số \(\dfrac{13}{24}\)và \(\dfrac{12}{14}\)

Answer 1

ta có : `12/14 = 6/7`

`13/24=(13xx7)/(24xx7)= 91/168`

`6/7=(6xx24)/(7xx24)= 144/168`

mà : `91<144`

`=> 13/24 < 12/14`

Answer 2

\(\dfrac{13}{24}\) = \(\dfrac{13\times7}{24\times7}\) = \(\dfrac{91}{168}\)

\(\dfrac{12}{14}\) = \(\dfrac{12\times12}{14\times12}\) = \(\dfrac{144}{168}\)

\(\dfrac{91}{689}< \dfrac{144}{168}\)

\(\dfrac{13}{24}\) < \(\dfrac{12}{14}\)