Question: What is the solution?

Solve 42 = -1829*u + 1822*u for u.

Answer: -6

Question: What is the solution?

Solve 57*h - 272 = -177 + 304 for h.

Answer: 7

Question: What is the solution?

Solve 21*b + 4*b - 180 = -5*b for b.

Answer: 6

Question: What is the solution?

Solve -241*u = 149*u - 2340 for u.

Answer:
6