Solve 90*b + 93*b - 384 = -1313 + 12641 for b.
Solve this plz.

A: 64

Solve 2531 - 7134 = -3227*h - 455 + 8760 for h.
Solve this plz.

A: 4

Solve 17*u = -155*u - 130*u - 6040 for u.
Solve this plz.

A:
-20