QUESTION: Math problem: Solve 7 = 709*d - 638*d + 149 for d.
ANS: -2
QUESTION: Math problem: Solve -2453 + 292 = -399*o + 5819 for o.
ANS: 20
QUESTION: Math problem: Solve 23*l - 6655 + 7506 = -187*l - 13849 for l.
ANS: -70
QUESTION: Math problem: Solve -5*a + 18*a + 143124 - 143189 = 0 for a.
ANS:
5