System of Linear Equations Solve

System of Linear Equations Solve for X and Y in the following problems. Make sure you show all your work. X + Y=7, X + 2Y = 11 y y + 2y = 11 y = 4 3X + 7Y = 24, 9X + 5Y = 24 7/3y 7/3 y) + 5y = 24 63/3y + 5y = 24 y = 3 4X + Y = 17, 2X + 3Y = 21 y = 17 -- 4x 2x + 3(17-4x) = 21 + y = 17 y = 5 18X + Y = 42, 6X - 3Y = -6 y = 42 -- 18x + y = 42 y = 6 Suppose Bob owns 2,000 shares of Company X and 10,000 shares of Company Y. The total value of Bob's holdings of these two companies is $340,000.

Suppose Frank owns 8,000 shares of Company X and 6,000 shares of Company Y. The total value of Franks holdings of these two companies is $340,000. Write equations for Bob and Frank's holdings. Use the variables X and Y to represent the values of shares of Company X and Company Y. 2000X + 10000Y = 340,000 8000X + 6000 Y = 340,000 Solve for the value of a share of Company X and Company Y. Show your work. 2000x = 340,000 -- 10000y x = 170 -- 5y 8000 (170 -- 5y) + 6000y = 340,000 1,360,000 -- 40,000y + 6000y = 340,000 -34,000y = -1020000 y = 30 2000x + 300000 = 340,000 2000x = 40,000 3.

Solve for X, Y, and Z. In the following systems of three equations: a. X +.