Write down the solution for this math problem: Solve 206817 = 34*c + 206477 for c.
answer: 10

Write down the solution for this math problem: Solve 0 = -186*f + 1251 - 1065 for f.
answer: 1

Write down the solution for this math problem: Solve 2728*z - 2874*z = -3796 for z.
answer: 26

Write down the solution for this math problem: Solve 155*r = 417*r + 178*r - 7920 for r.
answer:
18