2x 5 4x 20 July 8, 2019 16 32 64 128 5 2x 4x 2 20x 25 8 2x 5 4x 20 2x x 5 )- 4x 20 0 5 4x 7 )- 2x 20x 21 4x 5 2x 20 )= 184 3x 5 4x 20 2x 10 2x 5