Question: What is the solution?

Solve -45*v + 140 = -73*v for v.

Answer: -5

Question: What is the solution?

Solve 165*w + 731 = 1513*w - 4866 + 205 for w.

Answer: 4

Question: What is the solution?

Solve -17 = -67*r - 84 for r.

Answer: -1

Question: What is the solution?

Solve 246304 = 96*m + 246688 for m.

Answer:
-4