Write down the solution for this math problem: Solve 41*x + 16*x = -1140 for x.
answer: -20

Write down the solution for this math problem: Solve 375*c = 281*c + 2538 for c.
answer: 27

Write down the solution for this math problem: Solve -27 - 531 = -137*u + 264 for u.
answer: 6

Write down the solution for this math problem: Solve -9*u = -5*u + 8 for u.
answer:
-2