Question

-9/10 + 8/15 + 1/-12

Answer 1

\(\dfrac{-9}{10}+\dfrac{8}{15}+\dfrac{1}{-12}=\dfrac{-54}{60}+\dfrac{32}{60}+\dfrac{-5}{60}=\dfrac{-27}{60}=\dfrac{-9}{20}.\)

Answer 2

\(\dfrac{-9}{10}\) \(+\) \(\dfrac{8}{15}\) \(+\) \(\dfrac{1}{-12}\) 

\(=\) \(\dfrac{-54}{60}\) \(+\) \(\dfrac{32}{60}\) \(+\) \(\dfrac{-5}{60}\)

\(=\) \(\dfrac{-27}{60}\)

\(=\)  \(\dfrac{-9}{20}\)

@Nae