Write down the solution for this math problem: Solve 0 = 10*f - 11*f + 4*f - 39 for f.
answer: 13

Write down the solution for this math problem: Solve 189*b - 5528 - 2427 = 3385 for b.
answer: 60

Write down the solution for this math problem: Solve 26525 = -610*z - 46*z - 11523 for z.
answer: -58

Write down the solution for this math problem: Solve -13*v + 2 = 28 for v.
answer:
-2