Question:
Solve -677*s = -584 + 32403 for s..

Answer:
-47

Question:
Solve -1782*u + 2376 = -529*u - 429 - 2207 for u..

Answer:
4

Question:
Solve 2*x = -2*x + 4 for x..

Answer:
1

Question:
Solve -567*u + 493*u - 1613 = -4499 for u..

Answer:
39