Solve the equation for x. 
Definitions:
Marketplace
Any venue, physical or digital, where goods, services, or information are exchanged between buyers and sellers.
Consumer's Needs
The fundamental requirements that customers seek to satisfy when they purchase goods or services.
Exchange
The trade of things of value between the buyer and the seller so that each is better off as a result.
Value
The importance, worth, or usefulness of something perceived by someone or the society.
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