QUESTION: Math problem: Solve -138*o + 2863 = 271*o for o.
ANS: 7
QUESTION: Math problem: Solve -9*q = 1448 - 1484 for q.
ANS: 4
QUESTION: Math problem: Solve -61*d + 1246 = -d + 29*d for d.
ANS: 14
QUESTION: Math problem: Solve -29*r + 25*r + 20 = 0 for r.
ANS:
5