QUESTION: Math problem: Solve 11*r - 183 = -150 for r.
ANS: 3
QUESTION: Math problem: Solve -3*k - 56 = -59 for k.
ANS: 1
QUESTION: Math problem: Solve 0 = 6*b + 7 - 13 for b.
ANS: 1
QUESTION: Math problem: Solve -68*a + 16926 = 35*a + 300*a for a.
ANS:
42