Write down the solution for this math problem: Solve -3486 = 388*i + 782 for i.
answer: -11

Write down the solution for this math problem: Solve -23*n - 85 - 7 = 0 for n.
answer: -4

Write down the solution for this math problem: Solve 0 = 298*f - 320*f + 176 for f.
answer: 8

Write down the solution for this math problem: Solve 61*u + 98*u + 173*u = 17264 for u.
answer:
52