The perimeter of a triangle is 42 yards. The first side is 5 yards less than the second side, and the third side is 2 yards less than the first side. What is the length of each side?
2nd side = X yds.
1st. side = x-5 yds.
3rd. side = (x-5)-2 = x-7 yds.
X + (X-5) + (X-7) = 42.
3x - 12 = 42, X = 18 Yds.
X-5 = 18-5 = 13 Yds.
X- 7 = 18 - 7 = 11 Yds.