Q: What is the solution?
Solve -21 = 11*i + 1 for i.

A: -2

Q: What is the solution?
Solve -249*z + 182*z = 288*z - 8520 for z.

A: 24

Q: What is the solution?
Solve -200*h + 266*h + 623*h = -4823 for h.

A:
-7