Answer:
this makes no sense (not to be rude) but are we trying to find X or find the answer
Step-by-step explanation:
Answer:
-3, -1
Step-by-step explanation:
This is easier to understand with a picture...
We know that a triangle has 3 sides right?
Well, if the perimeter is 39 and there are 3 sides you would divide 39 by the 3 sides
39/3=13
Therefore, one side of the triangle would equal 13