Q: Solve:
Solve 70*u + 295 = -1945 for u.

A: -32

Q: Solve:
Solve 312*b + 18*b - 16441 = -71*b for b.

A: 41

Q: Solve:
Solve 0 = 55*a + 1725661 - 1724836 for a.

A:
-15