QUESTION: Math problem: Solve 1315 = -39*o + 2251 for o.
ANS: 24
QUESTION: Math problem: Solve -17*l - 18 = -137 for l.
ANS: 7
QUESTION: Math problem: Solve -79*h + 77*h = -10 for h.
ANS: 5
QUESTION: Math problem: Solve 0 = -14*v + 91 + 21 for v.
ANS:
8