SOLUTION: The longest side of the triangle is thrice the length of the shortest side.The medium-sized side is 4cm less than the longest side.The perimeter of the triangle is 31cm.how long is

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Question 1062648: The longest side of the triangle is thrice the length of the shortest side.The medium-sized side is 4cm less than the longest side.The perimeter of the triangle is 31cm.how long is the longest side?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
longest side       3x
medium side        3x-4
shortest side       x

3x%2B%283x-4%29%2Bx=31


7x=35

x=5 


SIDES          LENGTHS FOUND
longest side       15
medium side        11
shortest side       5

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
The longest side of the triangle is thrice the length of the shortest side.The medium-sized side is 4cm less than the longest side.The perimeter of the triangle is 31cm.how long is the longest side?
Duplicate. See Question 1062653