Subtract the fractions.
4⁄7 - 3⁄7
5⁄8 - 1⁄8
7⁄8 - 3⁄8
2⁄5 - 1⁄5
5⁄8 - 2⁄8
4⁄7 - 4⁄7
7⁄10 - 3⁄10
4⁄5 - 2⁄5
9⁄10 - 3⁄10
5⁄9 - 4⁄9
4⁄9 - 1⁄9
3⁄5 - 2⁄5