Write down the solution for this math problem: Solve -9 = 4*v - 5 for v.
answer: -1

Write down the solution for this math problem: Solve 21*b = 6*b - 45 for b.
answer: -3

Write down the solution for this math problem: Solve 0*a - 15*a = -15 for a.
answer: 1

Write down the solution for this math problem: Solve -29932 = 563*p - 1632*p for p.
answer:
28