6 x 7 )= 5 x 15 July 8, 2019 16 32 64 128 7 17 x 6 16 x 5 15 X 6 x 5 x 15 x 3 7 5 x 7 = 35 15 x 7/6 15 x = 5 7 6 x - 7 = 15 + 2 x
