Question

What if I had a number bond that says

Answer 1

Well, I believe that it's letting you know $\frac{2}{7}$ is simply just a fraction of a full number {1}

For example, You have a pie. Your Mother cut it in 7 slices, if your family ate 5 of the seven slices, there would be how many slices left?
The would be $\frac{2}{7}$ of one whole pie.

So, I hope you find this helpful. :3