The perimeter of a yield sign in the shape of an isosceles triangle is 22 feet if the shortest side is 2 feet less than the other two sides find the length of the shortest side

If this is saying that the shortest side is two less than the other side (which is equivalent to the last side)
x-2+x+x=22
3x-2=22
3x = 24
x = 8, the shortest side would then be 2 less, or 6 feet

OR if this is saying the shortest side is 2 less than the sum of the other two sides:
2x-2+x+x = 22
4x-2 = 22
4x = 24
x = 6, OR the shortest side is 4 feet.