1) 8 3/7 * 2 3/5 = 59/7 * 13/5 = 767/35
2) 6 - 1 2/9 = 6 - 11/9 = 43/9
3) 3 11/15 - 1 7/10 = (3-1) + (11/15 - 7/10) = 2 + 1/30 = 2 1/30
4) 2 1/16 - 1/9 = 33/16 - 1/9 = 281/144
5) 1 - 5/12 = 12-5/12 = 7/12
6) 6 3/8 - 2 3/4 = 51/8 - 11/4 = 29/8
7) 8 - 6/11 = 88-6/11 = 82/11
8) 4 2/15 - 3 5/12 = 62/15 - 41/12 = 43/60
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Answers & Comments
1) 8 3/7 * 2 3/5 = 59/7 * 13/5 = 767/35
2) 6 - 1 2/9 = 6 - 11/9 = 43/9
3) 3 11/15 - 1 7/10 = (3-1) + (11/15 - 7/10) = 2 + 1/30 = 2 1/30
4) 2 1/16 - 1/9 = 33/16 - 1/9 = 281/144
5) 1 - 5/12 = 12-5/12 = 7/12
6) 6 3/8 - 2 3/4 = 51/8 - 11/4 = 29/8
7) 8 - 6/11 = 88-6/11 = 82/11
8) 4 2/15 - 3 5/12 = 62/15 - 41/12 = 43/60