Question: What is the solution?

Solve -13*a - 336 = -0*a + 43*a for a.

Answer: -6

Question: What is the solution?

Solve 0 = 67*l - 71*l + 12 for l.

Answer: 3

Question: What is the solution?

Solve -196*c - 2885 = -28*c - 701 for c.

Answer: -13

Question: What is the solution?

Solve 11 = -42*w + 129*w + 98 for w.

Answer:
-1