Question:
Solve -73*f + 414 = -22*f - 249 for f..

Answer:
13

Question:
Solve 3194*v + 26205 - 35701 = 127846 for v..

Answer:
43

Question:
Solve -153*z = -169*z + 64 for z..

Answer:
4

Question:
Solve 175*z - 5261 = -100 - 436 for z..

Answer:
27