Q: Solve -462*d = 20819 - 30521 for d.

A: 21

Q: Solve -41551 = -3054*z + 11365 + 25790 + 128966 for z.

A: 68

Q: Solve 55*x + 578314 = 580514 for x.

A: 40

Q: Solve -4*v + 15*v + 731 = 742 for v.

A:
1