Definition of Substitution Method. One way to solve systems of equations is by substitution. In this method, solve an equation for one variable, then substitute that solution in the other equation, and solve.
Area code 407 is found in the US state of Florida. Primarily servicing the city of Orlando (population: 921360), area code 407 covers 5 counties of Florida.Located in the Eastern time zone, area code 407 is on the same time as New York, NY. Area code 407 was brought into effect on April 16, 1988.407 was split from the parent 305 area code.rimarily servicing the city of Orlando (population: 921360), area code 407 covers 5 counties of Florida. Located in the Eastern time zone, area code 407 is on the same time as New York, NY.
The 407 area code really does have it all. Not only does it have world-class entertainment, it also has an NBA team, the Orlando Magic. There are not many cities in the United States that can claim several theme parks, nearby oceans, a great university, excellent shopping, an NBA team, and affordable housing.rlando is also home to the University of Central Florida, which happens to have the second largest student population in the United States. In fact, nearly 60,000 students are enrolled at the University of Central Florida. UCF brings academics and research to the forefront of the 407 area code.