Question: What is the solution?

Solve -5*r - 106 = -121 for r.

Answer: 3

Question: What is the solution?

Solve 4*c + 150 - 150 = 0 for c.

Answer: 0

Question: What is the solution?

Solve -9*v = -28 + 19 for v.

Answer: 1

Question: What is the solution?

Solve 172*l = 14093 - 9621 for l.

Answer:
26