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(A-B) intersection (C-B)=A-(B intersection C)
Plz answer...

Yes. 
As,
(A-B) intersection (C-B) is portion of A not intersecting with  B and C not intersecting with B But A intersection C.
So, A - (B intersection C)
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(A-B) intersection (C-B) =(A intersection C) - B OR (A-B)=(A INTERSECTION B COMPLEMENT) ; USING DE-MORGANS LAW (C-B)=(C INTERSECTION BETWEEN COMPLEMENT) ;USING DE-MORGANS LAW THEREFORE, (A-B) intersection (C-B) =(A-B) INTERsECTION (C-B) =(A INTERSECTION BETWEEN COMPLEMENT) INTERSECTION (C INTERSECTION B COMPLEMENT) =(A INTERSECTION C) INTERSECTION B COMPLEMENT
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