Question: What is the solution?

Solve -24*b + 6*b = -90 for b.

Answer: 5

Question: What is the solution?

Solve -842*k - 325*k = 438*k - 61890 - 2310 for k.

Answer: 40

Question: What is the solution?

Solve 22 - 4 = 9*i for i.

Answer: 2

Question: What is the solution?

Solve -339 + 341 = h for h.

Answer:
2