mixed numbers to improper fractions

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1.
1 point
2 7/9
2.
1 point
2 9/10=
3.
1 point
4 1/3 =
4.
1 point
5 4/5
5.
1 point
3 5/6=
6.
1 point
1 7/8
7.
1 point
6 2/3
8.
1 point
2 3/4=
9.
1 point
9 2/7
10.
1 point
3 3/4=