Q: Solve -1123*d + 580*d + 598*d = -825 for d.

A: -15

Q: Solve -108 - 27 = 208*z - 2007 for z.

A: 9

Q: Solve 178*d + 70 = 168*d for d.

A: -7

Q: Solve 3 = -23*f + 12 - 193 for f.

A:
-8