Question

8/5 +3/7 = 

4/7 - 5/14 =

 

bằng bao nhiêu vậy mấy bạn

Answer 1

8/5 + 3/7 = 56/35 + 15/35 = 71/35.

4/7 - 5/14 = 8/14 - 5/14 = 3/14.

Answer 2

\(\dfrac{71}{35}\)

\(\dfrac{3}{14}\)

Answer 3

\(1.\dfrac{48}{35}+\dfrac{15}{35}=\dfrac{63}{35}=\dfrac{21}{7}=3\)

\(2.\dfrac{8}{14}-\dfrac{5}{14}=\dfrac{3}{14}\)

Answer 4

\(\dfrac{8}{5}+\dfrac{3}{7}=\dfrac{56}{35}+\dfrac{15}{35}=\dfrac{71}{35}\)

 

\(\dfrac{4}{7}-\dfrac{5}{14}=\dfrac{8}{14}-\dfrac{5}{14}=\dfrac{3}{14}\)

Answer 5

Sorry,mình nhầm :

\(\dfrac{8}{5}+\dfrac{3}{7}=\dfrac{56}{35}+\dfrac{15}{35}=\dfrac{71}{35}\)

Answer 6

71/35

3/14

 

Answer 7

\(\dfrac{8}{5}+\dfrac{3}{7}=\dfrac{56}{35}+\dfrac{15}{35}=\dfrac{71}{35}\)

\(\dfrac{4}{7}-\dfrac{5}{14}=\dfrac{8}{14}-\dfrac{5}{14}=\dfrac{3}{14}\)