The lengths of the sides of a triangle are consecutive odd numbers. What is the length of the longest side of the perimeter is 45 inches?
We can convert this into a slightly more abstract problem as follows:
For "perimeter" we can read "sum"
For "lengths of the sides of a triangle" we can read "three numbers"
If the middle of the three consecutive odd integers is
#45 = (n-2) + n + (n+2) = 3n#