SOLUTION: I have a question on this word problem: A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the expression that represents its perimeter. I have nothing on this I am at a lost a

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Question 109586: I have a question on this word problem: A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the expression that represents its perimeter.
I have nothing on this I am at a lost and do not know where to beginI know i have to write an equation but sometimes this is just so foreign to me any assistance would be appreciated.
Thank you, Barb Neely

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Remember the perimeter is the sum of all sides of a triangle. So if the sides are 3x + 7, 4x - 9, and 5x + 6, simply add them all up to get



Group like terms

Combine like terms



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