QUESTION: Math problem: Solve -23*k + 71 - 186 = 0 for k.
ANS: -5
QUESTION: Math problem: Solve -429*s = -386*s + 258 for s.
ANS: -6
QUESTION: Math problem: Solve 15*x + 7*x - 135 - 390 = 25 for x.
ANS: 25
QUESTION: Math problem: Solve -1084*b - 1728*b = 21715 + 3593 for b.
ANS:
-9