QUESTION: Math problem: Solve 20*m - 5*m - 1989 = -1719 for m.
ANS: 18
QUESTION: Math problem: Solve 88*q = 50413 - 50941 for q.
ANS: -6
QUESTION: Math problem: Solve -45*i = 8*i - 159 for i.
ANS: 3
QUESTION: Math problem: Solve 116 = 2*r + 122 for r.
ANS:
-3