Write down the solution for this math problem: Solve 79 + 77 = 31*a + 63 for a.
answer: 3

Write down the solution for this math problem: Solve -54*s + 441 + 1743 = -222*s for s.
answer: -13

Write down the solution for this math problem: Solve -5*o + 50*o - 118*o + 1157 = 16*o for o.
answer: 13

Write down the solution for this math problem: Solve 17973 + 35727 = -537*q for q.
answer:
-100