Question: What is the solution?

Solve 200*z = 215*z + 102 + 93 for z.

Answer: -13

Question: What is the solution?

Solve 6*u - 19*u = 734 - 630 for u.

Answer: -8

Question: What is the solution?

Solve -96 = 181*x + 85 for x.

Answer: -1

Question: What is the solution?

Solve -406*q + 194*q + 200*q = -101*q + 1691 for q.

Answer:
19