SOLUTION: An isosceles triangle has a base which is 3 inches shorter that any of the two sides. If its perimeter is 42 inches, find the length of the two sides.

Algebra ->  Length-and-distance -> SOLUTION: An isosceles triangle has a base which is 3 inches shorter that any of the two sides. If its perimeter is 42 inches, find the length of the two sides.      Log On


   

Question 772963: An isosceles triangle has a base which is 3 inches shorter that any of the two sides. If its perimeter is 42 inches, find the length of the two sides.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
L = length of each equal side
L-3 = length of base

Perimeter is 42 inches.
2L%2B%28L-3%29=42

2L%2BL-3=42
3L=42%2B3
3L=45
highlight%28L=15%29