(1) Ax + By = C (2) Dx + Ey = F

label Algebra
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by multiplying equation (1) by D and equation (2) by A. Before he can continue, his friend Angela comes by and says, "No, you should have multiplied equation (1) by E and equation (2) by B. Is Angela right? Why or why not?

Apr 25th, 2015

Both are correct. I case you multiply equation (1) by D and equation (2) by A, you will get value of y before value of x.

In the latter case you will get value of x before value of y.

But you will get same values of x and y.

Apr 25th, 2015

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Apr 25th, 2015
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Apr 25th, 2015
Jun 23rd, 2017
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