Question

quy đồng mẫu số

14/13 và 4/-23

Answer 1

\(\dfrac{14}{13}=\dfrac{14\times23}{13\times23}=\dfrac{322}{299}\)

\(\dfrac{-4}{23}=\dfrac{-4\times13}{23\times13}=\dfrac{-52}{299}\)

Answer 2

MSC: 299

\(\dfrac{14}{13}=\dfrac{322}{299}\) ; \(\dfrac{4}{-23}=-\dfrac{52}{299}\)

Answer 3

\(\dfrac{14}{13};-\dfrac{4}{23}\left(MSC=299\right)\)

\(\dfrac{14}{13}=\dfrac{14.23}{13.23}=\dfrac{322}{299};-\dfrac{4}{23}=\dfrac{-4.13}{23.13}=-\dfrac{52}{299}\)