Q: Solve:
Solve -262209 + 258489 = 124*v for v.

A: -30

Q: Solve:
Solve 0 = -9*d - 22 + 9 - 5 for d.

A: -2

Q: Solve:
Solve 120*v + 614 + 1906 = 0 for v.

A:
-21