De Morgan's Laws (Set Theory)/Set Difference/Difference with Intersection/Venn Diagram

Proof
Demonstration by Venn diagram:
 * DeMorgan-Minus-Intersection.png

The area in blue and magenta is the set difference of $S$ with $T_1$

The area in orange and magenta is set difference of $S$ with $T_2$

The complete shaded area is the set difference of $S$ with the intersection of $T_1$ and $T_2$.

It is also seen to be the union of the set difference of $S$ with $T_1$ and the set difference of $S$ with $T_2$.