SOLUTION: Subject: Math-using addition to solve a system of linear equations 1. x+y=12 x-y=4

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Question 581618: Subject: Math-using addition to solve a system of linear equations
1. x+y=12
x-y=4
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: Add the two equations to get 


    x + y = 12
+   x - y = 4
---------------
   2x + 0y = 16


So we now have the equation 2x = 16. Solve this for x. Once you have the solution for x, use it to find y.