15 7x 3 July 8, 2019 16 32 64 128 15 7x 3 5x 15 7x - 34 15 7x 3 x 15 7x 3 4x 15 7x 36 15 7x 3x 4 7x 15 3x 5 7x 15 3x 7x 15 3x 1 7x 15 30x 2 7x 15 3x 35 7x 15 3x 7 15 7x 3 3x 15 5 3 7x 6 Log3 7x 15 )= 3
