Write down the solution for this math problem: Solve 97*u = -680 - 1030 - 1604 - 469 for u.
answer: -39

Write down the solution for this math problem: Solve -21 = -2*i - 11 for i.
answer: 5

Write down the solution for this math problem: Solve 41*u = -38093 + 38093 for u.
answer: 0

Write down the solution for this math problem: Solve 4*m - 3622 = -3638 for m.
answer:
-4