The first side of a triangle measures 5 in. Less than the second side, the third side is 3 in.more than the first side,and the perimeter is 17 in. How long is the third side?
s3= 3 + (s2-5) = s2-2
s2-5 + s2 + s2 - 2 = 3 s2-7 = 17
s2 = 8
s3 = 6 in