SOLUTION: The perimeter of a triangle is7p-8p+9.find the third side of the triangle if ist side is2p-p+1 and 2nd side is11p-3p+5

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Question 980378: The perimeter of a triangle is7p-8p+9.find the third side of the triangle if ist side is2p-p+1 and 2nd side is11p-3p+5
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Unknown side is length u.
2p-p%2B1%2B11p-3p%2B5%2Bu=7p-8p%2B9.
Solve for u.