Question:
Solve 0 = -1962*w + 1975*w + 39 for w..

Answer:
-3

Question:
Solve 9*w - 77 + 131 = 0 for w..

Answer:
-6

Question:
Solve 2097*r = 4648 + 85897 - 374 for r..

Answer:
43

Question:
Solve -203 = 39*h - 47 for h..

Answer:
-4