Question: What is the solution?

Solve 409*l - 36 = 415*l for l.

Answer: -6

Question: What is the solution?

Solve 0 = -23*v + 17*v + 6 for v.

Answer: 1

Question: What is the solution?

Solve 16 = -13*m - 62 for m.

Answer: -6

Question: What is the solution?

Solve 12280 = -17*a + 12042 for a.

Answer:
-14