Posted by **Agnes** on Wednesday, December 16, 2009 at 5:25pm.

The shorter side of a triangle is 5 inches less than the medium size side. The larger side is 12 inches more than the medium size side. If the perimeter of the triangle is 40 inches, find the size of each side of the triangle. Show your work

- algebra -
**Charlie**, Wednesday, December 16, 2009 at 5:30pm
x+12+x-5+x=40

3x+7=40

3x=33

x=11

x-5+6

x+12=23

23, 11, 6

- algebra -
**Ms. Sue**, Wednesday, December 16, 2009 at 5:31pm
Let m = the length of the medium sized side.

m + m - 5 + m + 12 = 40

3m + 7 = 40

3m = 33

m = ?

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