Question: What is the solution?

Solve -105*d = 154*d + 2*d - 2610 for d.

Answer: 10

Question: What is the solution?

Solve -8*d = 23 + 17 for d.

Answer: -5

Question: What is the solution?

Solve -166*q + 41*q - 377 = 91*q + 161*q for q.

Answer: -1

Question: What is the solution?

Solve -24 = -6*t - 30 for t.

Answer:
-1