2x 5 7x 5x 2 July 8, 2019 16 32 64 128 2x 5 7x 3 )-( 5x 2 4x 3 7x 4 2x 5 )= 3 5x 2 )- 6 7x 4 2x 5 )=- 3 5x 2 2x 5 5x 1 8x 2 7x
