Question

a) \(\dfrac{-13}{30}+\dfrac{11}{20}-\dfrac{7}{15}\)

Answer 1

\(-\dfrac{26}{60}+\dfrac{33}{60}-\dfrac{28}{60}=\dfrac{-26+33-28}{60}=-\dfrac{7}{20}\)

Answer 2

7/12

Answer 3

\(=\left(-\dfrac{13}{30}-\dfrac{14}{30}\right)+\dfrac{11}{20}=-\dfrac{27}{30}+\dfrac{11}{20}=-\dfrac{18}{20}+\dfrac{11}{20}=\dfrac{7}{20}\)

Answer 4

−26/60+33/60−28/60=−26/60+33/60−28/60=−7/20

Answer 5

ủa lên lớp 6 rùi à