1/4 + 3/4 =
1
1/2 x 3 =
1 1/2
1/3 + 2/6 =
2/3 or 4/6
12 x 2/3 =
8
4/8 + 3/8 =
7/8
6 x 1/3 =
2
4/11 + 12/11 =
1 5/11
4/5 of 30 =
24
1 8/9 + 11/9 =
3 1/9
3/6 x 30 =
15
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