Question

help bài phía trên bài 3 :(

Answer 1

a) \(\dfrac{-5}{6}-\dfrac{5}{12}+\dfrac{7}{18}=\left(\dfrac{-5}{6}-\dfrac{5}{12}\right)+\dfrac{7}{18}=\left(\dfrac{-10}{12}-\dfrac{5}{12}\right)+\dfrac{7}{18}=\dfrac{-15}{12}+\dfrac{7}{18}=\dfrac{-5}{4}+\dfrac{7}{18}=\dfrac{-45}{36}+\dfrac{14}{36}=\dfrac{-31}{36}\)