Related Post: 9 2 3 4 1 5 9 X 2 * 3 X 1 4 3 X 5 2 3 4 X 1 5 9 X 3 4 As A Fraction 1 2 X 9 )= 3 4 5x 1 2 3 3x 9 )- 4 1 3 9x 21 )-( X 5 5 3 4 X 9 1 2 Envelope 1 2 3 X 4 5 6 7 8 9 2x 2 3 4 X )= 1 6 4x 5 )+ 9 2 2 3 X 5 )- 1 4 X 2 )= 9 2 Solution 2 3 X 5 )- 1 4 X 2 )= 9 2 Verify