Question:
Solve 2466 - 5411 = -250*w + 2555 for w..

Answer:
22

Question:
Solve -126*y - 2551 = 1653 + 332 for y..

Answer:
-36

Question:
Solve -639 + 681 = 7*a for a..

Answer:
6

Question:
Solve 0 = 2121*u - 59743 - 239318 for u..

Answer:
141