Write down the solution for this math problem: Solve 4*u - 39 = -83 for u.
answer: -11

Write down the solution for this math problem: Solve 43*u - 218 = 115*u + 790 for u.
answer: -14

Write down the solution for this math problem: Solve 0 = 2673*w - 2671*w + 74 for w.
answer: -37

Write down the solution for this math problem: Solve 398*w = -51082 + 68594 for w.
answer:
44