Write down the solution for this math problem: Solve 5*j - 2 = 13 for j.
answer: 3

Write down the solution for this math problem: Solve 2731 = 199*o + 441 + 10847 for o.
answer: -43

Write down the solution for this math problem: Solve 0 = -85*f - 74*f + 1590 for f.
answer: 10

Write down the solution for this math problem: Solve 439*c - 228*c = 242*c - 341 for c.
answer:
11