A way to solve a linear system algebraically is to use the substitution method. The substitution method functions by substituting the one y-value with the other. We're going to explain this by using an example. We can substitute y in the second equation with the first equation since y = y.
Area code 970 is an area code serving most of the western and northern parts of Colorado.It covers Aspen, Vail, Durango, Grand Junction, Fort Collins, and Estes Park.rea code 970 is an area code serving most of the western and northern parts of Colorado.
Area code 972 is found in the US state of Texas. Primarily servicing the city of Plano (population: 296656), area code 972 covers 9 counties of Texas. Located in the Central time zone, area code 972 is on the same time as Chicago, IL. Area code 972 was brought into effect on September 14, 1996.