This value of x can then be used to find y by substituting 1 with x e.g. in the first equation. The solution of the linear system is (1, 6). You can use the substitution method even if both equations of the linear system are in standard form. Just begin by solving one of the equations for one of its variables. Video lesson: Solve the linear system using the substitution method. 1  Pre-Algebra. 2  Algebra 1.
North American area codes 240 and 301 are telephone area codes for the western half of Maryland. They serve Maryland's portion of the Greater Washington, D.C. , metro area, portions of southern Maryland, and the more rural areas in the western portion of the state.o free up available numbers, the suburban use of 202 was ended in 1990. Despite the presence of the Baltimore-Washington area, 301 remained the exclusive area code for Maryland for 44 years, making Maryland one of the largest states with a single area code.
AreaCode.org is your one-stop site for area code lookup, area code search, and area code locator. The area code 304 was established October 1947 as one of the original area codes, and serves all of the U.S. state of West Virginia.It was overlaid with area code 681, effective March 28, 2009.rea Code Search. Find area codes using the area code search function on AreaCode.org. With area codes search, you can find city area codes in the United States, Canada and elsewhere.