Question: What is the solution?

Solve -2 = 9*q + 43 for q.

Answer: -5

Question: What is the solution?

Solve -90*n + 86*n = 16 for n.

Answer: -4

Question: What is the solution?

Solve 128*z - 396*z + 900 = 255*z + 377*z for z.

Answer: 1

Question: What is the solution?

Solve 0 = 6*n + 35 - 11 for n.

Answer:
-4