Question: What is the solution?

Solve -9929*f + 1780*f = -19377 - 143603 for f.

Answer: 20

Question: What is the solution?

Solve 6222*d + 739 = 6868*d - 25101 for d.

Answer: 40

Question: What is the solution?

Solve -2066*n + 296*n = -256650 for n.

Answer: 145

Question: What is the solution?

Solve 193*n = 296*n + 958*n - 43501 for n.

Answer:
41