Question: What is the solution?

Solve 109*r + 3 = 110*r for r.

Answer: 3

Question: What is the solution?

Solve 29*a - 58 = 58 for a.

Answer: 4

Question: What is the solution?

Solve -7033*l + 22777 = -229*l + 131641 for l.

Answer: -16

Question: What is the solution?

Solve 3*f + 6*f = -163*f - 860 for f.

Answer:
-5