Question:
Solve -1539 = 348*c - 267*c for c..

Answer:
-19

Question:
Solve 74*s + 907 + 322 + 2693 = 0 for s..

Answer:
-53

Question:
Solve 4*s = -0*s + 20 for s..

Answer:
5

Question:
Solve 1369*s - 2331 = 7252 for s..

Answer:
7