Question: What is the solution?

Solve -31759 = -1197*r - 2754*r + 122330 for r.

Answer: 39

Question: What is the solution?

Solve -7*y - 31 = -10 for y.

Answer: -3

Question: What is the solution?

Solve -10*h = -4 + 14 for h.

Answer: -1

Question: What is the solution?

Solve 164*i + 570 = 9331 - 561 for i.

Answer:
50