Question: What is the solution?

Solve 27*w + 30*w - 12*w = 0 for w.

Answer: 0

Question: What is the solution?

Solve -19*d + 398 - 56 = 19*d for d.

Answer: 9

Question: What is the solution?

Solve 10873*q = 1140*q - 104448 - 22081 for q.

Answer: -13

Question: What is the solution?

Solve 17*z = 22*z + 20 for z.

Answer:
-4