Question:
Solve 2*f + 2*f = 8 for f..

Answer:
2

Question:
Solve -105*z - 210*z = 39*z - 38*z + 22436 for z..

Answer:
-71

Question:
Solve 3 + 5 = 8*z for z..

Answer:
1

Question:
Solve 110*l = -48 + 32 - 94 for l..

Answer:
-1