Related Post: 10 1 2 X 5 3 4 10 1 2 X 5 3 4 X 15 1 2 X 5 10 3 4x 1 10 * X 2 3 4 5 * X 1 6 5 *( 3 1 )= 10 X *( 2 4 )= Y 1 2 4x 10 5 X 3 6 3x 2 5 X 1 3 4x 3 15 10 3/4-10 Vs 3/4-16