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Source: — Problem Solving |
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by rabab » Mon Sep 08, 2008 10:41 pm
7a-9 = 6a +4
=> 7a-6a = 9+4
So, a=13.

are you sure you're stuck with this question?
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by Smitae » Tue Sep 09, 2008 1:57 am
I think this is the only way we can solve, but the model answer for this problem is 8, which seems to be wrong.
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