Math
posted by Allen .
two sides of a triangle are equal. The third side is 3 less than the sum of the two equal sides. The perimeter is 31 inches. Find the length of each side

one side= 8.5
one side= 8.5
one side = 14 
The two sides equal 8.5 inches. The third side equals 14 inches.
8.5+8.5=17
173=14
14+17=31 
Let x = length of each of the two sides. Then third side = 2x3
2x + 2x 3 = 31
4x  3 = 31
4x = 34
x = 8.5
2x  3 = 17 3 = 14