SOLUTION: A triangle has 3 sides. The first side has a length of x. The second side has a length that is 12 more units than the first side. The third side has an identical length to the firs

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Question 1089076: A triangle has 3 sides. The first side has a length of x. The second side has a length that is 12 more units than the first side. The third side has an identical length to the first side. Write a simplified algebraic expression in terms of x for the perimeter of the triangle
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52808) (Show Source):
You can put this solution on YOUR website!
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x + (x+12) + (x+12), or which is the same, 3x + 24.

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Your first phrase "A triangle has 3 sides." is brilliant.

Answer by MathTherapy(10553) (Show Source):
You can put this solution on YOUR website!

A triangle has 3 sides. The first side has a length of x. The second side has a length that is 12 more units than the first side. The third side has an identical length to the first side. Write a simplified algebraic expression in terms of x for the perimeter of the triangle

This is UNNECESSARY: "A triangle has 3 sides." My 3rd grader knows this! I'm sure even 2nd, 1st graders, and pre-K kids know that too.
Anyway, length of 1st side: x
Length of 2nd side: x + 12
Length of 3rd side: x
Perimeter of the TRIANGLE that has 3 sides: