Question 934636
If one variable is already isolated or can easily be isolated without any fractions resulting, then use substitution.


If both equations are in standard form, then use elimination.


Graphing would be the last method I'd use because it's not always accurate (since you could get fractional/decimal answers); however, it's a good tool to check your answer visually.


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Technically, any of the 3 methods above will do as long as you use them correctly. I'm pointing out each case based on what I think is easiest.