Question:
Solve -569*m - 1632 = -345*m - 320*m for m..

Answer:
17

Question:
Solve -66 = -2*l - 9*l for l..

Answer:
6

Question:
Solve -91*i - 89*i + 2387 = 83*i - 46*i for i..

Answer:
11

Question:
Solve 5*f + 61 = 46 for f..

Answer:
-3