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February 28, 2015

February 28, 2015

Posted by **jeanne** on Sunday, December 9, 2012 at 8:34pm.

- algebra/math -
**Steve**, Sunday, December 9, 2012 at 8:41pmw(3w-7) = 20

w=4

check: 4*(3*4-7) = 4*5 = 20

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