Question:
Solve 0 = o + 19 - 2 - 5 for o..

Answer:
-12

Question:
Solve -1871 + 3840 = 53*o - 5133 for o..

Answer:
134

Question:
Solve -7932 - 6708 = 1628*v + 6524 for v..

Answer:
-13

Question:
Solve 9917*m = 9943*m + 286 for m..

Answer:
-11