The perimeter of an equilateral triangle is 9 inches more than the perimeter of a square, and the side of the triangle is 6 inches longer than the side of the square. Find the side of the triangle.
+1486 The perimeter of an equilateral triangle is 9 inches more than the perimeter of a square, and the side of the triangle is 6 inches longer than the side of the square. Find the side of the triangle.
The perimeter of the square is: 4x
The perimeter of the triangle is: 3 ( x + 6 ) or 4x + 9
4x + 9 = 3 ( x + 6 ) 
