Question: What is the solution?

Solve -387*z + 8408 + 1300 + 3837 = 0 for z.

Answer: 35

Question: What is the solution?

Solve -275*x - 268 = 282 for x.

Answer: -2

Question: What is the solution?

Solve 117*a + 177*a = -126*a - 10*a - 28810 for a.

Answer: -67

Question: What is the solution?

Solve -850*n - 923*n - 2150 = -1823*n for n.

Answer:
43