Question:
Solve 535431*r = 536326*r + 81445 for r..

Answer:
-91

Question:
Solve 180*w + 233*w - 90*w + 32558 = -123*w for w..

Answer:
-73

Question:
Solve -10*w + 501 = 15*w + 1526 for w..

Answer:
-41

Question:
Solve 5*n + 12 = n for n..

Answer:
-3