Question

31/35 - 2/7= ..... ;   8/7:2/7=..... 

Answer 1

\(\dfrac{31}{35}-\dfrac{2}{7}=\dfrac{31-10}{35}=\dfrac{21}{35}=\dfrac{3}{5}\\ \dfrac{8}{7}:\dfrac{2}{7}=\dfrac{8}{7}\cdot\dfrac{7}{2}=4\)

Answer 2

\(\dfrac{31}{35}-\dfrac{2}{7}=\dfrac{31}{35}-\dfrac{10}{35}=\dfrac{21}{35}=\dfrac{3}{5}\)

\(\dfrac{8}{7}:\dfrac{2}{7}=\dfrac{8}{7}.\dfrac{7}{2}=4\)

Answer 3

3/5 và 4

Answer 4

3/5,4