Question:
Solve -80*z - 683 = 437 - 240 for z..

Answer:
-11

Question:
Solve 25*f = 8551 - 8376 for f..

Answer:
7

Question:
Solve -15145*t - 63542 - 38711 = 2923 + 15984 for t..

Answer:
-8

Question:
Solve -14639*s - 1819 = -29127*s + 14595*s for s..

Answer:
-17