SOLUTION: How do i do this problem using elimination? 3x+y=11, 4x-y=7

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Question 838570: How do i do this problem using elimination? 3x+y=11, 4x-y=7
Answer by brysca(112) About Me  (Show Source):
You can put this solution on YOUR website!
So by using elimination you're setting the two equations vertically like this.
3x+y=11
4x-y=7
And all you're doing is just adding the two equations together. Since y and -y cancel out you get
7x=18
x=18/7
And to solve for y, plug x into one of the equations
3x%2By=11
3%2818%2F7%29%2By=11
54%2F7%2By=11
y=23%2F7
x=18/7 and y=23/7 is your final answer
-Bryan