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OpenStudy (anonymous):
Which method would be easier for you to use to solve these equations? Why? x + y = 13 -x + y = 3
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OpenStudy (accessdenied):
Well, what are your methods for solving linear equations in general?
OpenStudy (anonymous):
umm matrix
OpenStudy (apoorvk):
any method... best would be to add the two... so x gets eliminated straight away... and you get 2y=16 and so you get y easily. now substitute in equation to get x. i dont remember the names of the methods am sorry.
OpenStudy (anonymous):
Its says to use substitution
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