Question: What is the solution?

Solve 992 = 412*s - 455*s + 175 for s.

Answer: -19

Question: What is the solution?

Solve -263 = 41*m + 270 for m.

Answer: -13

Question: What is the solution?

Solve 34476*r - 34489*r = 169 for r.

Answer: -13

Question: What is the solution?

Solve -715*l = -495*l + 15840 for l.

Answer:
-72