Write down the solution for this math problem: Solve -1899*u - 1051*u + 90630 = -565*u for u.
answer: 38

Write down the solution for this math problem: Solve -15*v - 39 = 21 for v.
answer: -4

Write down the solution for this math problem: Solve 172*p + 27417 = 93*p - 624*p for p.
answer: -39

Write down the solution for this math problem: Solve -28*q = -31*q - 9 for q.
answer:
-3