Question:
Solve -9*r = -8*r - 82 + 73 for r..

Answer:
9

Question:
Solve 133*c = 862 + 69 for c..

Answer:
7

Question:
Solve 192 = -6*w + 38*w for w..

Answer:
6

Question:
Solve 37*s + 54*s - 3328 = -13*s for s..

Answer:
32