Write down the solution for this math problem: Solve 375*f + 153*f - 61 = -732*f + 6239 for f.
answer: 5

Write down the solution for this math problem: Solve -3667*d + 3613*d = 2485 + 3131 for d.
answer: -104

Write down the solution for this math problem: Solve 84812*q - 84657*q - 3875 = 0 for q.
answer: 25

Write down the solution for this math problem: Solve -52*s = -118*s + 77*s - 198 for s.
answer:
18