Q: Solve 2*o - o = 4*o for o.

A: 0

Q: Solve 0 = -93071*v + 93311*v + 1604 + 76 for v.

A: -7

Q: Solve 337*b = -35*b + 7068 for b.

A: 19

Q: Solve 245*a = 244*a - 4 for a.

A:
-4