I would almost recommend cutting that slot completely out on the left pic and replacing it with a small patch and recutting the slot. But it's hard to tell from a picture. It's a high stress point with the slot there and even a weld will have trouble staying intact. Moving the weaker point away from the slot would help keep them from re-cracking. Or maybe put a doubler behind the cracked spot if the assembly will allow that.The one on the right can probably be successfully rewelded, assuming you get the braze metal completely gone.
Shush!, that's a custom Stovebolt part, correct?
