Q: What is the solution?
Solve -43*d + 4*d = -7*d + 320 for d.

A: -10

Q: What is the solution?
Solve 0 = -123*o - 1084 + 1576 for o.

A: 4

Q: What is the solution?
Solve -9885 - 9423 = -424*z - 5316 for z.

A:
33