2 2x 5 )= 5x 20 July 8, 2019 16 32 64 128 4 2x 5 )+ x 20 2 5x 20 2 4 3x )+ 5 2x 3 )= 20 5x 2x 2 5x 8 5 2x 20 2 x 2 5 2x 5