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Mathematics 15 Online
OpenStudy (anonymous):

3x + y = 19 , and x + 3y = 1. Find the value of 2x + 2y A. 20 B. 18 C. 11 D. 10 E. 5

OpenStudy (mertsj):

Can you find x and y?

OpenStudy (texaschic101):

3x + y = 19 ---> y = -3x + 19 now sub -3x + 19 in for y in the other equation x + 3y = 1 x + 3(-3x + 19) = 1 -- now distribute and solve for x. Once you find x, sub that into either of the equations and fund y. Once you have x and y, sub that into 2x + 2y and you will have your answer

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