Question: What is the solution?

Solve 0 = 2835*x - 2824*x - 990 for x.

Answer: 90

Question: What is the solution?

Solve 978*q = -1030*q + 2093*q + 7480 for q.

Answer: -88

Question: What is the solution?

Solve -144*x + 2022 - 987 = -1989 for x.

Answer: 21

Question: What is the solution?

Solve -29*k - 36*k = 44*k + 872 for k.

Answer:
-8