Question:
Solve 816 = -501715*q + 501667*q for q..

Answer:
-17

Question:
Solve 0 = 388*s + 400*s - 202*s - 9376 for s..

Answer:
16

Question:
Solve -3320*a + 205 = 204*a - 17415 for a..

Answer:
5

Question:
Solve 4894*f - 20029 + 64326 = -38901 for f..

Answer:
-17