Q: Solve:
Solve 30*m + 37*m - 11*m + 840 = 0 for m.

A: -15

Q: Solve:
Solve 15126 = 409*u - 3873 - 2678 for u.

A: 53

Q: Solve:
Solve 0 = -18*h - 24*h - 462 for h.

A:
-11