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January 25, 2015

January 25, 2015

Posted by **keith** on Friday, August 30, 2013 at 1:54am.

- maths -
**Steve**, Friday, August 30, 2013 at 4:35amxy-8 = x(y-2)

xy-8 = xy-2x

2x = 8

x = 4

This makes sense, since the two numbers removed must have the same mean as the whole bunch. Namely, (3+5)/2 = 4

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