Question: What is the solution?

Solve 5553*k - 62 - 66 = 5561*k for k.

Answer: -16

Question: What is the solution?

Solve 1789 = -192*q - 515 for q.

Answer: -12

Question: What is the solution?

Solve 25 = -19*x - 13 for x.

Answer: -2

Question: What is the solution?

Solve 70*f - 1167 - 553 = -16*f for f.

Answer:
20