Question: What is the solution?

Solve -433*u + 1014 - 1995 = 407 + 5107 for u.

Answer: -15

Question: What is the solution?

Solve 65*u + 315 = 2*u for u.

Answer: -5

Question: What is the solution?

Solve 2 = 19*g - 21*g for g.

Answer: -1

Question: What is the solution?

Solve -168*l = 293*l + 165 + 296 for l.

Answer:
-1