QUESTION: Math problem: Solve -2*x + 5*x + 12 = 0 for x.
ANS: -4
QUESTION: Math problem: Solve 98316 - 187982 - 356906 = 11492*x + 196980 for x.
ANS: -56
QUESTION: Math problem: Solve -44 + 38 = -i for i.
ANS: 6
QUESTION: Math problem: Solve 206*f + 189*f = 535*f - 180*f + 1440 for f.
ANS:
36