Question:
Solve -87*u - 45 + 393 = 0 for u..

Answer:
4

Question:
Solve 125*n - 154*n = -87 for n..

Answer:
3

Question:
Solve 745*x - 3529 - 285 = 2467 + 6384 for x..

Answer:
17

Question:
Solve 127*t + 1 + 507 = 0 for t..

Answer:
-4