Q: What is the solution?
Solve -43*r - 22641 = -23630 for r.

A: 23

Q: What is the solution?
Solve -22*z + 23*z - 2 = 0 for z.

A: 2

Q: What is the solution?
Solve -95*x - 189 = 90 + 386 for x.

A:
-7