Question: What is the solution?

Solve -21*b - 1540 = -98*b for b.

Answer: 20

Question: What is the solution?

Solve 608 = -228*k + 185 - 489 for k.

Answer: -4

Question: What is the solution?

Solve -581 = 338*z + 322 + 787 for z.

Answer: -5

Question: What is the solution?

Solve -16681 = -177*y + 6885 - 3388 for y.

Answer:
114