Respuesta :

nnoonnnooo

Answer:

8

Step-by-step explanation:

Two Pythagorean triples are (6, 8, 10) and (8, 15, 17)

Both of these right triangles share a common side, 8. While the hypotenuses are 10 and 17.

The other side must add up to 21, which 15 and 6 do.