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March 1, 2015

Posted by **Maria** on Tuesday, December 14, 2010 at 6:35pm.

Example: 11,12,5,3,x;

Mean=7.4

- Algebra -
**qwerty123**, Tuesday, December 14, 2010 at 6:37pmsum=(7.4)5=37. 37-11-12-5-3=x=6.

- Algebra -
**Jen**, Wednesday, December 15, 2010 at 12:11am(11+12+5+3+x)/5=7.4

31+x/5=7.4

Multiply both sides by 5

31+x=37

x=6

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