If 
and, then verify that
(A – B)’ = A’– B’
We will first calculate L.H.S i.e. (A+B)’ and then consecutively we will calculate R.H.S and verify that both are equal.
From equation 1 & 2 we verify that
(A-B)’ = A’-B’. Hence verified.
2
If and, then verify that
(A – B)’ = A’– B’
We will first calculate L.H.S i.e. (A+B)’ and then consecutively we will calculate R.H.S and verify that both are equal.
From equation 1 & 2 we verify that
(A-B)’ = A’-B’. Hence verified.