Question:
Solve -145*i + 56 = -89 for i..

Answer:
1

Question:
Solve 12*i - 31*i - 133 = 0 for i..

Answer:
-7

Question:
Solve 561159*h = 561203*h + 1848 for h..

Answer:
-42

Question:
Solve -199 + 68 = -30*s + 79 for s..

Answer:
7