SOLUTION: if an equilateral triangle with side x has the same perimeter as another triangle with sides 5,8 and x what is the value of x?

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Question 457158: if an equilateral triangle with side x has the same perimeter as another triangle with sides 5,8 and x what is the value of x?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
3x=5+8+x
2x=13
x=6.5
.
Ed