Question

quy đồng ps:5/-14 và 20/-52

Answer 1

\(MSC:364\\ \dfrac{-5}{14}=\dfrac{-5.26}{14.26}=\dfrac{-130}{364}\\ \dfrac{-20}{52}=\dfrac{-20.7}{52.7}=\dfrac{-140}{364}\)

Answer 2

\(\dfrac{5}{-14};\dfrac{20}{-52}\left(MSC=728\right)\)

\(\dfrac{5}{-14}=\dfrac{5\times\left(-52\right)}{-14\times\left(-52\right)}=-\dfrac{260}{728}\)

\(\dfrac{20}{-52}=\dfrac{20\times\left(-14\right)}{-52\times\left(-14\right)}=-\dfrac{280}{728}\)