SOLUTION: A triangle has 3 sides. 3x +7, 4x - 9, 5x + 6. What is the expression that represents its perimeter?

Algebra ->  Triangles -> SOLUTION: A triangle has 3 sides. 3x +7, 4x - 9, 5x + 6. What is the expression that represents its perimeter?      Log On


   

Question 56978: A triangle has 3 sides. 3x +7, 4x - 9, 5x + 6. What is the expression that represents its perimeter?
Answer by rchill(405) About Me  (Show Source):
You can put this solution on YOUR website!
To calculate the perimeter, just add up all the sides: 3x+7+4x-9+5x+6. Now combine like terms to get 12x+4.