QUESTION: Math problem: Solve 12*r + 719 = 2*r + 739 for r.
ANS: 2
QUESTION: Math problem: Solve 82*x + 1928 = 323*x for x.
ANS: 8
QUESTION: Math problem: Solve -115*v - 148*v = 370*v + 9495 for v.
ANS: -15
QUESTION: Math problem: Solve -108*f + 139*f + 248 = 0 for f.
ANS:
-8