Question: What is the solution?

Solve -8*o - 52 = -36 for o.

Answer: -2

Question: What is the solution?

Solve -832*r + 816*r - 304 = 0 for r.

Answer: -19

Question: What is the solution?

Solve 0 = 152*d - 81 + 1753 for d.

Answer: -11

Question: What is the solution?

Solve -2012 = 5*l - 2007 for l.

Answer:
-1