QUESTION: Math problem: Solve -12*p + 9 = -41 - 22 for p.
ANS: 6
QUESTION: Math problem: Solve 138*r - 2 = 136*r for r.
ANS: 1
QUESTION: Math problem: Solve -168*i + 105*i = -315 for i.
ANS: 5
QUESTION: Math problem: Solve 4*o + 62*o + 252*o = 0 for o.
ANS:
0