Answer is No.
The reason why is that
One side of the triangle has to be less than the sum of the other two sides and greater than the magnitude of their difference.
Rule 1: (side1 + side2) > side3
Rule 2: Side3 < |side1 - side2|
Lets check the fact by adding / subtracting two sides and comparing with the third one..
Case1: 7+ 8 = 15 = length of third side. Rule1 fails
Case2:
8+15 > 7 Rule1 sucess
15–8 = 7 = length of third side. Rule 2 fails.
Case3:
7+15>8 Rule1 success
15–7=8 = length of third side. Rule 2 fails.
So, considering the rules and checking the facts..
it is impossible to create a triangle with above 3 sides.
