Question:
Solve 386*i = 214 + 4335 + 855 for i..

Answer:
14

Question:
Solve -6438 + 12099 = -629*r for r..

Answer:
-9

Question:
Solve 12 = -8*o + 6*o for o..

Answer:
-6

Question:
Solve -221 + 597 - 3448 = 124*l + 3624 for l..

Answer:
-54