Question:
Solve 0 = -41*z + 312 + 16 for z..

Answer:
8

Question:
Solve 7833 - 7880 = -47*w for w..

Answer:
1

Question:
Solve 9309*y - 9291*y = -252 for y..

Answer:
-14

Question:
Solve 0 = 111*x - 115*x + 16 for x..

Answer:
4