Question: What is the solution?

Solve -3*x - 7 = 11 for x.

Answer: -6

Question: What is the solution?

Solve 0 = 22899*z - 23023*z + 2480 for z.

Answer: 20

Question: What is the solution?

Solve -43*y - 213 + 643 = 0 for y.

Answer: 10

Question: What is the solution?

Solve 0 = -2*l + 3*l + 3 for l.

Answer:
-3