Question: What is the solution?

Solve 12*x + 20 = -40 for x.

Answer: -5

Question: What is the solution?

Solve -1495 + 139 = 113*u for u.

Answer: -12

Question: What is the solution?

Solve -82*g + 112*g = -13*g - 136*g - 7876 for g.

Answer: -44

Question: What is the solution?

Solve 3099*x - 64637 = 6640 for x.

Answer:
23