2 3 x 3 8 x 7 12 July 8, 2019 16 32 64 128 2 3 x 3 8 x+ 7 12 15 2 3 * x 3 8 * x 7 12 2 3 x is equal to 3 by 8 x 7 12 2 upon 3 x is equal to 3 upon 8 x 7 upon 12 2^x + 8^x = 130