Answers

2016-01-13T17:57:33+08:00
Let x = longer piece
2x-130 = shorter piece

x + 2x - 130 = 500
3x = 500 + 130
 \frac{3x}{3}= \frac{630}{3} \\x = 210

So that, the answer to your question is 210 m. (The shorter piece is 2(210) - 130 = 290 m)
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Your welcome, anyway. :)
but how?
o.O you don't know how to analyze algebraic expressions? o.O
I not yet expert so that's why I need your help.
I'm