3 1 5 4x 20 July 8, 2019 16 32 64 128 1 5 4x 20 )+ 3x 6 x 3 3 4x 1 4x 20 1 2x 5 3 4x 1 5 2x 5 4 3 20x 5 3/5 x 1 4/21 3= frac 1 5 (4x-20)51(4x−20)
