How Do We Solve Diamond Problems ?

Diamond Problems :

A diamond problem is a X shaped problem where  you have to find two digits that both have a sum of the number on the top of the X and a product of the number on the bottom of the X to find the left and right digits.

     *

  \ A /                             
?  X  ?                
  / B \
    +

For an example , 

     *

  \ 12 /                             
?  X  ?                
  / 7 \
    +

To find the solution you have to find the factors of 12 you could list them if it helps you . Now match it up to see which numbers that sum up to 7 . Your final results would be  3 and 4 .