Q: What is the solution?
Solve -13430 = 1212*z + 6144 - 3818 for z.

A: -13

Q: What is the solution?
Solve 12*r = 9*r + 15 for r.

A: 5

Q: What is the solution?
Solve 127*n = -45 + 172 for n.

A:
1