Question: What is the solution?

Solve 879 = 42*h + 271*h + 2444 for h.

Answer: -5

Question: What is the solution?

Solve -105*k = 1821 + 909 for k.

Answer: -26

Question: What is the solution?

Solve -48*r - 23 = -25*r for r.

Answer: -1

Question: What is the solution?

Solve -2*o - 16 - 51 + 6 = 89 for o.

Answer:
-75