Question: What is the solution?

Solve 4*x = 9*x + 20 for x.

Answer: -4

Question: What is the solution?

Solve 253 + 314 = -21*x - 42*x for x.

Answer: -9

Question: What is the solution?

Solve 5*g - 94 = 52*g for g.

Answer: -2

Question: What is the solution?

Solve 2005*z + 6426 + 274907 - 42738 = 0 for z.

Answer:
-119