Question:
Solve -80 = -99*p + 79*p for p..

Answer:
4

Question:
Solve 97*u - 109*u = 48 for u..

Answer:
-4

Question:
Solve 94*m - 86*m + 16 = 0 for m..

Answer:
-2

Question:
Solve 285*t = 441*t + 156 for t..

Answer:
-1