SOLUTION: 3x-y=10 4x+y=15 Find the common solution using elimination.

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Question 877854: 3x-y=10
4x+y=15 Find the common solution using elimination.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Add the two equations together to eliminate y
3x-y%2B4x%2By=10%2B15
7x=25
x=25%2F7
Then use either equation to solve for y
4%2825%2F7%29%2By=15
y=105%2F7-100%2F7
y=5%2F7