Question

7/11+ 7/3+ 15/11+ 8/3 là bằng bao nhiêu ? 

Answer 1

\(=\left(\dfrac{7}{11}+\dfrac{15}{11}\right)+\left(\dfrac{7}{3}+\dfrac{8}{3}\right)=2+5=7\)

Answer 2

`7/5+7/3+15/11+8/3`

`=(7/11+15/11)+(7/3+8/3)`

`=22/11+15/3`

`=2+5`

`=7`

Answer 3

`7/11+ 7/3+ 15/11+ 8/3=(7/11+15/11)+(7/3+8/3)=22/11+15/3=2+5=7`

Answer 4

\(=\left(\dfrac{7}{11}+\dfrac{15}{11}\right)+\left(\dfrac{7}{3}+\dfrac{8}{3}\right)\)

\(=\dfrac{22}{11}+\dfrac{15}{3}=2+5=7\)

Answer 5

7