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 (or Area Code 407) is located in the state of FL. Area Code 407 is one of the 269 3-digit telephone area codes in the USA.inter Park is a suburban city in Orange County, Florida, United States. The population was 24,090 at the 2000 census. According to the U.S. Census Bureau's 2006 estimates, the city had a population of 28,083. It is part of the Orlando&ndash;Kissimmee Metropolitan Statistical Area.