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Mathematics, 31.05.2020 03:58 gsbsjshzn

The second side of a triangle is three times its first side, and its third side is five more than its first side. The triangle perimeter is 20 unit. What is the length of the second side? (idk why it says highschool lol)

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The second side of a triangle is three times its first side, and its third side is five more than it...
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