Question:
Solve 186 - 660 = -79*r for r..

Answer:
6

Question:
Solve -915 = -1443*g + 3313 + 7384 + 2818 for g..

Answer:
10

Question:
Solve 102*i + 7584 = -150*i + 66*i - 972 for i..

Answer:
-46

Question:
Solve -840*h + 187*h - 734*h = 62*h - 30429 for h..

Answer:
21