Q: Solve:
Solve 407*u + 8487 = -536*u for u.

A: -9

Q: Solve:
Solve -z - 1520 = -4*z + 27*z - 248 for z.

A: -53

Q: Solve:
Solve 41*b + 159 + 331 = -125 for b.

A:
-15