Question: What is the solution?

Solve 0 = 2*t - 7*t - 15 for t.

Answer: -3

Question: What is the solution?

Solve -990 = 17*i - 837 for i.

Answer: -9

Question: What is the solution?

Solve -1066*n - 574 = -984*n for n.

Answer: -7

Question: What is the solution?

Solve -53*y - 320 = -85*y for y.

Answer:
10