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13 Verify the distributive law, given A = {4,5}, B = {3, 6, 7), and C = (2, 3). To verify the first part of the law, we find the left- and right-hand expressions separately: Left: AU(BNC) = {4,5) U (3) = {3,4,5) Right: (AUB) n(AUC) = {3, 4, 5, 6, 7}n 12, 3, 4, 5) = 13,4,5)