Question

các bạn giúp mình quy đồng với mình cần gấp

Answer 1

\(9,MSC:195\\ \dfrac{9}{13}=\dfrac{9.15}{13.15}=\dfrac{135}{195}\\ \dfrac{-6}{65}=\dfrac{\left(-6\right).3}{65.3}=\dfrac{-18}{195}\\ \dfrac{-7}{39}=\dfrac{\left(-7\right).5}{39.5}=\dfrac{-35}{195}\\ 10,MSC:41154\\ \dfrac{12}{-57}=\dfrac{\left(-12\right).722}{57.722}=\dfrac{-8664}{41154}=\dfrac{-4}{19}\\ \dfrac{9}{38}=\dfrac{9.1083}{38.1083}=\dfrac{9747}{41154}=\dfrac{9}{38}\\ \dfrac{8}{19}=\dfrac{8.2166}{19.2166}=\dfrac{17328}{41154}=\dfrac{8}{19}\)