how many legs do three equines have all combined

12 legs.

Three equines would have a total of 12 legs combined. Each equine, such as a horse or a donkey, typically has four legs. Therefore, for three equines, we can calculate as follows:

Equine 1: 4 legs
Equine 2: 4 legs
Equine 3: 4 legs
Total legs: 4 + 4 + 4 = 12 legs.