Hi,
I can't figure out how to change this expression and this will help me for a better understanding of adders.

A'BC + AB'C + ABC' + ABC = C . ( A xor B) + AB
my result so far is
A'BC + AB'C + ABC' + ABC= C ( A'B + AB' + AB) + ABC' = C(A+B) + ABC' then I'm stuck.

I don't know you go from this : C(A+B) + (AB)C' to this: C( A xor B) + AB .
thanks in advance

 

Since you know what the answer is supposed to be, try starting from the answer and see if you can get back to the original starting point. If you can, then see if you figure how to back track that and go the other way (the way you wanted to originally).