Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 6327:
Answer by IA(6) About Me  (Show Source):
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this problem cannot be solved by the addition method in order to cancel the -6y you must subtract one equation from the other
x-6y=33
8x-6y=54

8x-6y=54
x-6y=33
7x=21
x=3