Question:
Solve -1 = -8*x + 15 for x..

Answer:
2

Question:
Solve -3132*u - 8522*u - 23308 = 0 for u..

Answer:
-2

Question:
Solve -19*p - 1050 = -10*p + 41*p for p..

Answer:
-21

Question:
Solve 86 - 443 = 51*t for t..

Answer:
-7