Derive the Following Result $$\text { For all sets } B \text { and } C , ( B - C ) - B = \emptyset \text {. }$$

question 12

Essay

Derive the following result. You may do so either "algebraically" using the properties listed in
Theorem 6.2.2, being sure to give a reason for every step, or you may use the element method
for proving a set equals the empty set. $$\text { For all sets } B \text { and } C , ( B - C ) - B = \emptyset \text {. }$$

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Definitions:

Blood Flow

The movement of blood through the circulatory system, delivering nutrients and oxygen to tissues and organs.

Epicardium

The outermost layer of the heart's wall, serving as a protective layer and a part of the heart's electrical conduction system.

Outermost Layer

The external layer of an object or structure, which is the farthest from its center or core.

Pericardium

The double-walled sac containing the heart and the roots of the great vessels, providing protection and reducing friction.