Two sides of a triangle have the same length the thrid side measures 5m less than twice the common length the perimeter of the triangle is 19 m what are the lengths of the three sides

Let x= measure of sides that have common length
then from "the third side measures 5m less than twice the common length."
2x-5= third side
.
Because they gave us the perimeter we have:
11 = x+x+2x-511 = 4x-5
16 = 4x
4 m = x
.
third side:
2x- 5 =2(4)-5 = 8-5= 3m
Length answers:
4m, 4m, and 3m

26, 20, 40

Step-by-step explanation:

x + y + z = 86

x = y + 6

z = 2y

now we put the 2. and 3. equation into the first :

y + 6 + y + 2y = 86

4y = 80

y = 20

z = 2y = 2×20 = 40

x = y + 6 = 20 + 6 = 26