QUESTION: Math problem: Solve 286 = -5*a + 261 for a.
ANS: -5
QUESTION: Math problem: Solve 74 = 13*r + 19*r - 214 for r.
ANS: 9
QUESTION: Math problem: Solve -272*i = -61724 + 38876 for i.
ANS: 84
QUESTION: Math problem: Solve 0 = -894*j + 11846 - 2906 for j.
ANS:
10