Algebra 2
posted by Peter .
Solve using linear combinations.
x  5y = 6
3x + 4y = 18
What are linear combinations?

Algebra 2 
PsyDAG
Since this is not my area of expertise, I searched Google under the key words "linear combinations" to get these possible sources:
http://www.google.com/search?client=safari&rls=en&q=linear+combinations&ie=UTF8&oe=UTF8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/
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