QUESTION: Math problem: Solve -516 - 209 = 52*v - 465 for v.
ANS: -5
QUESTION: Math problem: Solve 561 = 2*y + 579 for y.
ANS: -9
QUESTION: Math problem: Solve 925*r + 3903 - 24726 - 452 = 0 for r.
ANS: 23
QUESTION: Math problem: Solve -12*c + 4*c - 189 = -85 for c.
ANS:
-13