Question:
Solve 2*h + 2 - 6 = 0 for h..

Answer:
2

Question:
Solve 31*a = 33*a - 2 for a..

Answer:
1

Question:
Solve -27*b + 684*b = 21681 for b..

Answer:
33

Question:
Solve -15 - 1 = 16*c for c..

Answer:
-1