QUESTION: Math problem: Solve 10*s + 79 = 59 for s.
ANS: -2
QUESTION: Math problem: Solve 28*k = 14*k - 56 for k.
ANS: -4
QUESTION: Math problem: Solve 55*r + 30 = 105 + 90 for r.
ANS: 3
QUESTION: Math problem: Solve -8*w + 218 = 602 for w.
ANS:
-48