Question:
Solve 48*o - 20 = 53*o for o..

Answer:
-4

Question:
Solve -2*f - 6 = -4 for f..

Answer:
-1

Question:
Solve -19986 = -972*k + 20838 for k..

Answer:
42

Question:
Solve -96261*a + 96415*a + 6089 + 2577 = 658 for a..

Answer:
-52