Add the following 3 4 7 12 July 8, 2019 16 32 64 128 Add 3 4 7 12 1 2 3 4 a b c d e f g A 1 2 3 4 5 6 4 + 4 = 3 Add 2/3 + 3/4 1 2 3 4 abcd
