Question: What is the solution?

Solve -548009 + 544324 = -55*r for r.

Answer: 67

Question: What is the solution?

Solve 0 = -25*k - 94 + 44 for k.

Answer: -2

Question: What is the solution?

Solve 331 + 4757 = 273*a + 45*a for a.

Answer: 16

Question: What is the solution?

Solve 7651 = 84*g + 7987 for g.

Answer:
-4