Write down the solution for this math problem: Solve 6 + 6 = 21*o + 54 for o.
answer: -2

Write down the solution for this math problem: Solve 10*p - 31*p = 190*p - 6330 for p.
answer: 30

Write down the solution for this math problem: Solve 187*q - 324 = 119*q + 1036 for q.
answer: 20

Write down the solution for this math problem: Solve 30 = -119*d + 109*d for d.
answer:
-3