Question:
Solve -32 = -15*h + 7*h for h..

Answer:
4

Question:
Solve 201*t + 110 = 182*t - 137 for t..

Answer:
-13

Question:
Solve 16*o - 20*o = -20 for o..

Answer:
5

Question:
Solve 35 + 37 = -18*b for b..

Answer:
-4