Write down the solution for this math problem: Solve -13*v + 54509 - 53911 = 0 for v.
answer: 46

Write down the solution for this math problem: Solve 5*k = -5*k - 40 for k.
answer: -4

Write down the solution for this math problem: Solve 0 = 4*o + 39 - 19 for o.
answer: -5

Write down the solution for this math problem: Solve 23*j = 40*j + 85 for j.
answer:
-5