QUESTION: Math problem: Solve -14*r + 87*r - 438 = -0*r for r.
ANS: 6
QUESTION: Math problem: Solve 9*f + 20 = 29*f for f.
ANS: 1
QUESTION: Math problem: Solve 9*a + 57 = -10*a for a.
ANS: -3
QUESTION: Math problem: Solve 15 - 223 = 6*q + 7*q for q.
ANS:
-16