Question: What is the solution?

Solve -31*n + 140 - 350 = 39*n for n.

Answer: -3

Question: What is the solution?

Solve -116*q + 36*q = 400 for q.

Answer: -5

Question: What is the solution?

Solve -18 = -70*w + 51*w - 132 for w.

Answer: -6

Question: What is the solution?

Solve 0 = -692*t + 7911 + 25997 for t.

Answer:
49