Question: What is the solution?

Solve 4189 = 187*z - 3729 - 4798 for z.

Answer: 68

Question: What is the solution?

Solve -49*d + 57*d + 2044 = 300*d for d.

Answer: 7

Question: What is the solution?

Solve -858*l + 877*l = 342 for l.

Answer: 18

Question: What is the solution?

Solve -12720 = 774*w + 13596 for w.

Answer:
-34