Write down the solution for this math problem: Solve -772*u + 26552 = -7416 for u.
answer: 44

Write down the solution for this math problem: Solve -24*y + 18 + 54 = 0 for y.
answer: 3

Write down the solution for this math problem: Solve -698*k + 7353 - 8749 = 0 for k.
answer: -2

Write down the solution for this math problem: Solve -123 - 399 = 87*u for u.
answer:
-6