Question: What is the solution?

Solve 30*q - 33 = -213 for q.

Answer: -6

Question: What is the solution?

Solve 0 = -9*o - o - 10 for o.

Answer: -1

Question: What is the solution?

Solve -32 + 761 = 81*v for v.

Answer: 9

Question: What is the solution?

Solve 0 = -52*a - 372*a - 184*a + 21280 for a.

Answer:
35