(A) Prove the Following Statement Using the Element Method for Proving

question 16

Essay

(a) Prove the following statement using the element method for proving that a set equals the empty set: For all sets $A$ and $B , A \cap ( B - A ) = \emptyset$ .
(b) Use the properties in Theorem $6.2 .2$ to prove the statement in part (a). Be sure to give a reason for every step.

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Definitions:

Place of Business

The specific location where a company conducts its operations or where its main offices are located.

Real Property

Real property refers to land and anything permanently attached to the land, such as buildings and structures.

Law of Sales

Governs the sale of goods, defining the rights, duties, and liabilities of buyers and sellers in transactions involving personal property.

Price of Goods

the monetary value assigned to physical products that are available for sale in the market.