a b c d e
+e f g h 0
+j k 0 0 l
------------
m n 0 0 p

a e j m
+ b f k n
+ c g 0 0
+ d h 0 0
------------
e 0 l p
now i have to find non-zero hexadecimal digits which satisfies both of the above conditions.how to solve it???????