Question:
Solve 179 - 284 = -21*n for n..

Answer:
5

Question:
Solve 108*o = 68*o + 720 for o..

Answer:
18

Question:
Solve -68*u - 880 - 9616 = 260*u for u..

Answer:
-32

Question:
Solve 256*y = 226*y - 360 for y..

Answer:
-12