SOLUTION: Hello, i need help with the following equation and I really need to see the work because I would like to know how to do it, not just know the answer. Thanks Solve the system

Algebra ->  Linear-equations -> SOLUTION: Hello, i need help with the following equation and I really need to see the work because I would like to know how to do it, not just know the answer. Thanks Solve the system       Log On


   



Question 448022: Hello, i need help with the following equation and I really need to see the work because I would like to know how to do it, not just know the answer.
Thanks
Solve the system of equations
x + y = 5
x - y = -9

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Notice that the coefficients on the variables are already additive inverses (1 and -1), so the system is already set up to solve by the elimination method.

Add the two equations:





You should be able to take it from here.

John

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