To find three equivalent fraction for 2/7, we can multiple 2/7 by the equivalent of 1/1. For example:
2/7 x 1/1 = 2/7
since 1/1 = 1 and multiplying by 1 does not change the value.
If we multiply:
2/7 x 2/2 = 4/14
Here again, since 2/2 = 1 we aren't changing the value, just the way it is written. Both 2/7 and 4/14 are equal to 0.286 (rounded).
We could also multiply by 3/3, 4/4, 5/5 and so on to find more fractions that are equal to 2/7. As long as we are multiplying by the equivalent of 1, we'll get a fraction that is the same as 2/7.