Q: What is the solution?
Solve 0 = -2*l + 8*l - 12 for l.

A: 2

Q: What is the solution?
Solve 196 = -35*r + 14 - 98 for r.

A: -8

Q: What is the solution?
Solve 132*k + 280*k - 58*k + 40*k = 23246 for k.

A:
59