Question: What is the solution?

Solve -224*i + 13530 = 63*i + 164*i for i.

Answer: 30

Question: What is the solution?

Solve -34938 = -2344*l + 56478 for l.

Answer: 39

Question: What is the solution?

Solve 0 = 25*c - 20*c + 20 for c.

Answer: -4

Question: What is the solution?

Solve 35*r = 43*r + 40 for r.

Answer:
-5