Algebra 1
posted by Aubrey .
The perimeter of a triangle is 20 inches. The longest side is 4 inches longer than the shortest side, and the shortest side is three fourths the length of the middle side. Find the length of each side of the triangle

Let x = shortest side, then x + 4 = longest and middle = 4/3x
x = 3/4m > 4/3x = m
x + x + 4 + 4/3x = 20
Solve for x and then the other sides. 
Two side triangle have the same lenght. The third side measures 5 m less than twice the common lenght. The perimeter of the triange is 23 m. What are the lenghts of the three sides?