Write down the solution for this math problem: Solve -674*n - 559 - 671 - 51 = -247*n for n.
answer: -3

Write down the solution for this math problem: Solve 395 + 397 - 309 = 157*s - 773 for s.
answer: 8

Write down the solution for this math problem: Solve 37*r = 108 + 114 for r.
answer: 6

Write down the solution for this math problem: Solve 0 = o + 177 - 185 for o.
answer:
8