Question:
Solve -100*s + 109 = 58*s + 2479 for s..

Answer:
-15

Question:
Solve 2*y = -3*y - 3*y for y..

Answer:
0

Question:
Solve -90249*r = -90337*r + 2503 + 1281 for r..

Answer:
43

Question:
Solve 77*c + 94122 - 97510 = 0 for c..

Answer:
44