Question: What is the solution?

Solve -131*q = -29916 + 57896 - 20513 for q.

Answer: -57

Question: What is the solution?

Solve 28 = -y + 30 for y.

Answer: 2

Question: What is the solution?

Solve 1280*f + 412*f = 425*f - 12243 - 16898 for f.

Answer: -23

Question: What is the solution?

Solve 490*x - 260 - 701 = 7859 for x.

Answer:
18