Question: What is the solution?

Solve 11 - 67 = 15*l + 19 for l.

Answer: -5

Question: What is the solution?

Solve 443*m - 1798 - 5420 = 42*m for m.

Answer: 18

Question: What is the solution?

Solve 10*r + 8*r + 36 = 0 for r.

Answer: -2

Question: What is the solution?

Solve -22*f + 5752 - 6170 = 0 for f.

Answer:
-19