Triangle with side Equaling:-
Side 1= 5-2x
Side 2= -4x+9
Since the three sides have the same length that length is
5-2x= -4x+9
So, we solve for x, and then find 5-2x, the length of each side.
5-2x=-4x=9
5-2x= -4x+9
5-2x=4x-5= -4x+9+4x-5
4x-2x=9-5
2x=4
X=2
5-2x=5-2.2
5-2x=5-4
5-2x=1 is the length of each one of the three sides of this regular triangle. So the perimeter 3.2=3
