Question:
Solve -106 = -165*a + 112*a for a..

Answer:
2

Question:
Solve -5*f = 3*f - 32 for f..

Answer:
4

Question:
Solve -85*b + 51*b - 68*b = -3984 - 402 for b..

Answer:
43

Question:
Solve 45*x - 78 = -303 for x..

Answer:
-5