SOLUTION: The perimeter of a triangle is 24m- 6 units. If two of the sides are 5m- 7 units and 2m+ 5 units,what is the length of the third side?

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Question 1035547: The perimeter of a triangle is 24m- 6 units. If two of the sides are 5m- 7 units and 2m+ 5 units,what is the length of the third side?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Perimeter is the sum of all three sides.
Let's call the missing side x. Then we can write
x + 5m-7 + 2m+5 = 24m-6
x + 7m-2 = 24m-6
Now subtract 7m and add 2...we get
x - 2 = 17m-6
x = 17m-4
the third side...