Q: Solve:
Solve 3370 = -595*v + 442*v + 310 for v.

A: -20

Q: Solve:
Solve -28*o + 45 + 34 = -509 for o.

A: 21

Q: Solve:
Solve 3*u - 5*u - 5*u = 0 for u.

A:
0