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December 25, 2014

December 25, 2014

Posted by **Alka** on Tuesday, January 11, 2011 at 7:18am.

- geometry -
**Reiny**, Tuesday, January 11, 2011 at 8:54am13x/3 + 7x/3 + 5x/6 = 180

multiply each term by 6

26x + 14x + 5x = 1080

solve for x, sub its value into 13x/3

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