Question:
Solve 216*r = 2097*r - 24801 - 116274 for r..

Answer:
75

Question:
Solve 0 = -565*w + 53*w - 522*w - 33088 for w..

Answer:
-32

Question:
Solve 0 = 2*r + 832 - 836 for r..

Answer:
2

Question:
Solve 206*f + 5701 + 7091 = 1668 for f..

Answer:
-54