Question:
Solve 0 = -108*h + 103*h + 10 for h..

Answer:
2

Question:
Solve 309 = 15*o + 159 for o..

Answer:
10

Question:
Solve 43*d - 15 = 48*d for d..

Answer:
-3

Question:
Solve q + 1080 = 1079 for q..

Answer:
-1