Math homework question

Question

a flower bed is in the shape of a triangle with one side twice the length of the shortest side, and the third side is 30 feet more than the length of the shortest side. Find the dimensions if the perimeter is 198 feet

Answer 1

x = 2y

z=30+y

x+y+z = 198

2y+y + 30+y = 198

4y = 198-30 = 168

y = 42 = shortest side

x = 84

z = 72

42+84+72 = 198