Q: Solve:
Solve 42*v + 308*v = -4*v + 26*v - 13120 for v.

A: -40

Q: Solve:
Solve 59*l - 556 - 44 = 84*l for l.

A: -24

Q: Solve:
Solve 2*u + 3*u = -20 for u.

A:
-4