Question:
Solve -9 = 4*d + 7 for d..

Answer:
-4

Question:
Solve -1053 = 5*k - 1073 for k..

Answer:
4

Question:
Solve 14292*h - 10499*h = -360335 for h..

Answer:
-95

Question:
Solve -99*v + 45*v + 47*v = 0 for v..

Answer:
0