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a=b+c-2 a=c-d+9 a=b-d+11 based on the system of equations above, what is the value of a? (a) 2 (b) 9 (C) 10 (d) 11 (e) 20

Mathematics
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cheating for what? I don't know how to do this question so I'm posting. And you spelled "site" wrong.
Here we have 3 equations and 4 unknowns. I believe this problem is indeterminate.
i never said I want a straight answer. Do you have something against me? Why are you picking on me?

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Other answers:

Are you sure you typed it in correctly?
Yep I did. this problem is from a sat practice book.
that's the whole problem. What happens if the person comes up with a different answer other than the choices?
The best I can do is give you a in terms of either b, c or d.
I tried that but it doesn't work out for some reason.
@lgbasallote any ideas?
@trenvilla 's good....
anyway...what did you try @eyust707 ?
@ tenvilla I wasn't even talking to you
@trenvilla does not like Asians :P
agree
i think you failed to notice there are only 3 unknowns here since they're all equal to a
jeez people are so touchy these days @sussycake there are more variables than equations here, so either there is a typo, one equation is missing, or the problem is posed incorrectly you can solve for one variable in terms of others, but you cannot assign a number to the variables
when did people here get so uptight about the questions. take a pill
the thread is ridiculous! facepalm.sigh
calm the math down, let's just help each other out, bros.
Ok, I got a=0, but that's obviously not right.

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