-5
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7:12 or 7 to 12
7 and 12 7 + 12 = 19
There are 16 subsets: {0, 5, 7, 12}, {0, 5, 7}, {0, 5, 12}, {0, 7, 12}, {5, 7, 12}, {0, 5}, {0, 7}, {0, 12}, {5, 7}, {5, 12}, {7, 12}, {0], {5}, {7}, {12}, and the empty set.
-12
That's the same as 7/12 x 12/1 = 84/12 = 7