Question:
Solve 67*z = 43*z + 56*z + 480 for z..

Answer:
-15

Question:
Solve 29*f + 110*f - 3157 = 62*f for f..

Answer:
41

Question:
Solve 61*c = 172*c + 123*c + 132*c + 33672 for c..

Answer:
-92

Question:
Solve 56*d + 11794 = 11066 for d..

Answer:
-13