Related Post: X 4 5 6 7 X 4 5 6 7 8 4 By 5 6 7 X 3 4 5 6 7 X 4 Possible Solutions 5 6 7 3 4 X 5 6 7 8 3 By 4 5 6 7 8 1 2 3 X 4 5 6 7 8 5 X 4 6 )= 7x 4 X 5 )- 6 2 2x 7