Question:
Solve -126944 = 640*w - 178784 for w..

Answer:
81

Question:
Solve 0 = 13*h + 17*h for h..

Answer:
0

Question:
Solve -31*x + 446 = -4*x - 13 for x..

Answer:
17

Question:
Solve 94*y + 3*y = -582 for y..

Answer:
-6