Answers

2014-06-30T20:54:36+08:00
3x + 4x = 180
7x = 180
(7x = 180) * 4/7
4x = 720/7 --> Mick
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2014-06-30T21:11:35+08:00
Joe~> P80 : P100 <~Mick  . .
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