OK NM, I figured out the problem, ty.
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OK NM, I figured out the problem, ty.
Hello Mike. The short way to solve: recognize that the only way A could have a known value is if the third equation is a linear combination of the first two. So, you show that it isn't, and hence conclude that the value for A can't be determined from the data you've been given.
The long way: try one of the proposed values for A and solve the 3 equations in 3 unknowns to determine X, Y and Z. Then do it again with a different value of A, and see that the values of X, Y and Z are different. Hence A cannot be determined.
Nm
Actually... wait a minute. I thought I solved it but then I tried it again, and I was wrong. Maybe I didn't... ooh you might be right!
Omg ebaines.. I think you were right the first time I believe! I thought I solved it, and I just tried it out, and I was entirely WRONG! Ty!!
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