15 - x = 7 July 8, 2019 16 32 64 128 15 x 70 15 x 75 15 x 700 15 x 72 15 x 750 15 x 78 15 x 74 15 x 73 15 x 7500 15 x 7 9 15 x 7 1 2 15 x 7 10 15 x 75000 15 x 7 20 15 x 7 1
