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September 1, 2014

September 1, 2014

Posted by **yessenia** on Thursday, October 23, 2008 at 11:07pm.

- geometry -
**Reiny**, Friday, October 24, 2008 at 12:32amafter making a diagram

it is clear that

20y-7 = 5y+4 + 7y-3

solve this for y, then sub it into the expressions given.

check: you should get 13 for AC

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