Question:
Solve -287350 = 19*v - 287255 for v..

Answer:
-5

Question:
Solve 74*d = 61*d - 84*d + 582 for d..

Answer:
6

Question:
Solve -9*q - 14 - 4 = 0 for q..

Answer:
-2

Question:
Solve -4 - 356 = -30*q for q..

Answer:
12