Question:
Solve 270 = -345*z + 390*z for z..

Answer:
6

Question:
Solve 277*n + 814 + 888 = 351*n for n..

Answer:
23

Question:
Solve 9364*y - 800368 = -3694*y + 570722 for y..

Answer:
105

Question:
Solve -2416*o = -2431*o - 360 for o..

Answer:
-24