Q: Solve -15*v = -19*v for v.

A: 0

Q: Solve 0 = -26*x + 74*x + 15*x - 693 for x.

A: 11

Q: Solve 0 = 540*c - 751 + 2010 + 1981 for c.

A: -6

Q: Solve -13600*h = -13629*h + 725 for h.

A:
25