急! 急! 急!maths question
回答 (1)
2010-07-26 6:56 pm
✔ 最佳答案
Put x = a + b + c, then x - a = b + c, x - b = a + c , x - c = a + b.So (x - a)/(b + c) = (x - b)/(a + c) = (x - c)/(a + b) = 1
The sum of these 3 terms = 3
therefore answer is x = a + b + c.
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