QUESTION: Math problem: Solve -10*a = -4*a - 6 for a.
ANS: 1
QUESTION: Math problem: Solve -11*r = -4*r - 57*r + 650 for r.
ANS: 13
QUESTION: Math problem: Solve -31*v - 35 = 70 - 43 for v.
ANS: -2
QUESTION: Math problem: Solve -5*i = 175 - 225 for i.
ANS:
10