Q: What is the solution?
Solve 36*b + 378 = -15*b - 75*b for b.

A: -3

Q: What is the solution?
Solve -186*u - 522 = 516 - 108 for u.

A: -5

Q: What is the solution?
Solve -469309 = -257*d - 454403 for d.

A:
58