Related Post: 4 X 1 3 5 2x 5 4 2x 1 )- 2 X 5 )= 5 X 1 )+ 3 Verify 3 4 1 2 X 8 )=- 2 5 2x 5 )+ 3x 2x 3 7 12 X 4 1 5 4x 5 13 3/5 * 4/5 3/5*2/5