Question: What is the solution?

Solve -154 = -3*r - 175 for r.

Answer: -7

Question: What is the solution?

Solve -23 = -5*h - 28 for h.

Answer: -1

Question: What is the solution?

Solve 0 = 52*n + 208 for n.

Answer: -4

Question: What is the solution?

Solve 20*h + 633 = 893 for h.

Answer:
13