Q: Solve:
Solve 1360*w - 512424 = -907*w - 2909*w for w.

A: 99

Q: Solve:
Solve -583*r + 15168 + 23885 = -1803*r - 7307 for r.

A: -38

Q: Solve:
Solve 30*t + 15 = 15*t for t.

A:
-1