Question: What is the solution?

Solve 6*l - 20*l + 676 = 38*l for l.

Answer: 13

Question: What is the solution?

Solve 660*z + 8653 = -16*z + 2569 for z.

Answer: -9

Question: What is the solution?

Solve -9*a - 15*a - 72 = 0 for a.

Answer: -3

Question: What is the solution?

Solve 0 = -1023*w - 1418 + 12671 for w.

Answer:
11