Write down the solution for this math problem: Solve -591*u - 8610 + 927 = 0 for u.
answer: -13

Write down the solution for this math problem: Solve -5322*p = -5325*p - 12 for p.
answer: -4

Write down the solution for this math problem: Solve 80*r - 990 - 2050 = 0 for r.
answer: 38

Write down the solution for this math problem: Solve 381*p - p = -261*p + 67*p for p.
answer:
0