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April 20, 2014

April 20, 2014

Posted by **shakira.shakira** on Sunday, February 27, 2011 at 6:50am.

- math -
**agrin04**, Sunday, February 27, 2011 at 8:20amState that the difference to be 'b'

y = x + b

b = y - x. ..(1)

z = y + b = x + 2b

b = (z - x)/2. ..(2)

Combining equations (1) and (2):

b = y - x = (z - x)/2

y = (z + x)/2

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