Question: What is the solution?

Solve 3*i = 24*i + 42*i - 63 for i.

Answer: 1

Question: What is the solution?

Solve 509*k + 6544 + 61567 - 3239 = 3212*k for k.

Answer: 24

Question: What is the solution?

Solve 16 = 26*a - 6 - 4 for a.

Answer: 1

Question: What is the solution?

Solve 755*z + 637*z = 4925 + 6211 for z.

Answer:
8