Write down the solution for this math problem: Solve 1027*i = 1036*i for i.
answer: 0

Write down the solution for this math problem: Solve -1821 = 139*c + 820 for c.
answer: -19

Write down the solution for this math problem: Solve 582599 - 331851 + 190850 = -7568*s - 549810 for s.
answer: -131

Write down the solution for this math problem: Solve 72*u + 2075 = 425*u + 663 for u.
answer:
4