SOLUTION: the perimeter of a trangle is 136cm. if the three sides of the trangle are (x + 7)cm, (2x - 5)cm, and (3x + 2)cm, what is the lenght of each side?

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Question 222916: the perimeter of a trangle is 136cm. if the three sides of the trangle are (x + 7)cm, (2x - 5)cm, and (3x + 2)cm, what is the lenght of each side?
Found 2 solutions by solver91311, edjones:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


The perimeter of any polygon is the sum of the measures of the sides, so:



Solve for then substitute that value back into each of the expressions for the measures of the three sides.


John

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
x+7+2x-5+3x+2=136
6x+4=136
6x=132
x=22cm
29, 39 and 68 are the 3 sides
.
Ed