Q: What is the solution?
Solve 20 = -38*z + 33*z for z.

A: -4

Q: What is the solution?
Solve -1743*i + 642*i = 0 for i.

A: 0

Q: What is the solution?
Solve 0 = -140*u + 100*u + 67*u + 108 for u.

A:
-4