Q: What is the solution?
Solve -2786*k = 134*k - 976 + 3896 for k.

A: -1

Q: What is the solution?
Solve f + 2*f = -3*f for f.

A: 0

Q: What is the solution?
Solve -21*q - 191 = 82 for q.

A:
-13