Question: What is the solution?

Solve 25*a + 20 = 120 for a.

Answer: 4

Question: What is the solution?

Solve 238*x = 234*x - 16 for x.

Answer: -4

Question: What is the solution?

Solve -10 = -11*c + 1 for c.

Answer: 1

Question: What is the solution?

Solve -15202*z = 15336*z + 15292*z - 46243*z - 23541 for z.

Answer:
-57