Q: What is the solution?
Solve 20*b + 17*b - 247 = 12 for b.

A: 7

Q: What is the solution?
Solve -294*j + 220*j + 1377*j = -164178 for j.

A: -126

Q: What is the solution?
Solve 17*s = 13*s - 4 for s.

A:
-1