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- Apr 26th 2012, 10:27 AM #1

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- Apr 26th 2012, 07:09 PM #2
## Re: enlighten me please!!

If you use the first four squares to set up a system of equations with the outer numbers as coefficents of 4 unknowns and the middle numbers as the RHS constant terms you can solve the system. Use this result find the value for 'a' missing number. I get -14.8421.

I doubt this is what the author is looking for.

- Apr 27th 2012, 02:58 AM #3

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- May 4th 2012, 07:28 AM #4

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- May 4th 2012, 08:35 AM #5

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- May 7th 2012, 02:55 AM #6

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- May 7th 2012, 03:02 AM #7

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- May 7th 2012, 11:14 PM #8

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