Question:
Solve 1198*s - 11032 = 17471 - 4543 for s..

Answer:
20

Question:
Solve -63*r - 14234 - 2150 = -127*r - 192*r for r..

Answer:
64

Question:
Solve -7369*f + 7371*f = 16 for f..

Answer:
8

Question:
Solve -54 = -686*m + 677*m for m..

Answer:
6