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July 23, 2014

July 23, 2014

Posted by **johnny** on Monday, March 28, 2011 at 11:33am.

- math -
**PsyDAG**, Monday, March 28, 2011 at 12:22pmS = .75F

F - S = 60

Substitute .75F for S in second equation and solve for F. Insert that value into the first equation and solve for S. Check by inserting both values into the second equation.

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