Write down the solution for this math problem: Solve -4*o - 17*o + 421 - 1141 = -o for o.
answer: -36

Write down the solution for this math problem: Solve -1825*a + 96298 + 106707 = 83808 - 46878 for a.
answer: 91

Write down the solution for this math problem: Solve -2*u - 18*u = 120 for u.
answer: -6

Write down the solution for this math problem: Solve 583*s + 84 = 569*s for s.
answer:
-6