Question:
Solve -469*o = -364*o - 1365 for o..

Answer:
13

Question:
Solve 25*i - 140 = -18*i + 33*i for i..

Answer:
14

Question:
Solve -3*f - 160 + 154 = 0 for f..

Answer:
-2

Question:
Solve o = -9 + 12 for o..

Answer:
3