Question:
Solve -35*f + 50*f = -75 for f..

Answer:
-5

Question:
Solve -12790 = 738*i - 9100 for i..

Answer:
-5

Question:
Solve 299 = 34*g + 537 for g..

Answer:
-7

Question:
Solve 4*g + 0*g = 0 for g..

Answer:
0