Question: What is the solution?

Solve 601*q - 24 = 604*q for q.

Answer: -8

Question: What is the solution?

Solve -40 = -17*d - 18 + 97 for d.

Answer: 7

Question: What is the solution?

Solve 0 = 135*t + 87*t + 222 for t.

Answer: -1

Question: What is the solution?

Solve 0 = -i + 4*i - 15 for i.

Answer:
5