Question: What is the solution?

Solve -7553 = -11*r - 7399 for r.

Answer: 14

Question: What is the solution?

Solve 121 = 29*l + 527 for l.

Answer: -14

Question: What is the solution?

Solve -3129 + 5209 = -32*c for c.

Answer: -65

Question: What is the solution?

Solve -8*x - 83*x = 51*x - 2556 for x.

Answer:
18