Q: What is the solution?
Solve 53*x + 990 = x - 3*x for x.

A: -18

Q: What is the solution?
Solve -111 = -26*w + 1 + 174 for w.

A: 11

Q: What is the solution?
Solve 0 = 31*a - 32*a - 1 for a.

A:
-1