Question

Answer 1

a) \(\dfrac{18}{24}+\dfrac{15}{-10}=\dfrac{9}{12}+\dfrac{-5}{2}=\dfrac{9}{12}+\dfrac{-30}{12}=\dfrac{-21}{12}=\dfrac{-9}{4}\)

b) \(\dfrac{-3}{27}+\dfrac{56}{28}=\dfrac{-1}{9}+2=\dfrac{9\times2-1}{9}=\dfrac{17}{9}\)

 

Answer 2

c: \(=-\dfrac{4}{7}-\dfrac{5}{6}=\dfrac{-24-35}{42}=-\dfrac{59}{42}\)

d: \(=\dfrac{-4}{9}-\dfrac{5}{18}=\dfrac{-8-5}{18}=-\dfrac{13}{18}\)