Question:
Solve -170 = 29*i - 112 for i..

Answer:
-2

Question:
Solve -13500 = -176441*h + 176580*h - 3631 for h..

Answer:
-71

Question:
Solve -43*w + 32*w + 18*w = -126 for w..

Answer:
-18

Question:
Solve 350*a + 4832 = -95*a - 1398 for a..

Answer:
-14