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Solve using linear combinations.

x - 5y = 6
3x + 4y = 18

What are linear combinations?

1 answer

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=UTF-8&oe=UTF-8

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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