Question:
Solve 15*x + 186 - 771 = 0 for x..

Answer:
39

Question:
Solve 0 = 134*f + 775 + 297 for f..

Answer:
-8

Question:
Solve -2342*s - 1530*s - 5148 = 118756 for s..

Answer:
-32

Question:
Solve 1610*z - 483*z - 524*z - 488*z - 5865 = 0 for z..

Answer:
51