Write down the solution for this math problem: Solve -405*f + 136 = -422*f for f.
answer: -8

Write down the solution for this math problem: Solve -2265 + 2229 = 9*i for i.
answer: -4

Write down the solution for this math problem: Solve 29 - 25 = -b for b.
answer: -4

Write down the solution for this math problem: Solve 0 = -5*c - 8 - 12 for c.
answer:
-4