Dattaprabhakar G. answered • 09/07/14
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Britt:
Solving by elimination means you eliminate one variable at a time. From the first equation you get
x = (58 -7y) / 5.
Substituting the above x (expressed in terms of y), you "eliminate" x.
6[(57 - 7y)/5] + 7y = 69. See, x is not there, eliminated.
Now you have a (linear) equation only in y, which YOU can solve. The solution you get is free of x too. You substitute this value of Y in x = (58 -7y) / 5, to get a (linear) equation only in x. YOU solve that too! Let us share the pleasant (?) job. Please do not let just the Tutors do the work for you.
In another way, you could have started with y = (56-5x)/7 and eliminated y first. If you get stuck anywhere, post a comment. I will help.
Dr. G.
