Q: What is the solution?
Solve -8*z + 0 = -32 for z.

A: 4

Q: What is the solution?
Solve 0 = 8*n + 32 for n.

A: -4

Q: What is the solution?
Solve -1961*r - 381 = -1910*r - 1809 for r.

A:
28