Question: What is the solution?

Solve -55*c - 1312 = 40*c - 13*c for c.

Answer: -16

Question: What is the solution?

Solve 3 = -528*y + 2529 + 1415 - 245 for y.

Answer: 7

Question: What is the solution?

Solve 7 = -913*k + 920*k for k.

Answer: 1

Question: What is the solution?

Solve -47*f + 9 = -50*f for f.

Answer:
-3