Q: What is the solution?
Solve 9 = -3*z - 0 for z.

A: -3

Q: What is the solution?
Solve 123*i = 405*i - 17068 - 6056 for i.

A: 82

Q: What is the solution?
Solve -5*v - 35 = -70 for v.

A:
7