Hello there! The number that best completes both equations is 15/7.
Given the two factors, we can divide by using the skip flip multiply method:
1. Skip
Since our first fraction is 5/7, we can skip it.
2. Flip
Our next fraction is 1/3. To successfully divide, we need to multiply by the reciprocal of 1/3, which otherwise means to flip the fraction to 3/1.
3. Multiply
Now that we have our two fractions, we can multiply accordingly:
5/7 • 3/1 = 15/7
5/7 divided by 1/3 gives us 15/7, and 15/7 • 1/3 gives us 5/7. The unknown fraction here is 15/7. Hope this helps!