Question:
Solve 0 = -122*n + 98*n + 90*n - 462 for n..

Answer:
7

Question:
Solve 738 - 81 = 61*c - 65 - 559 for c..

Answer:
21

Question:
Solve -1033 = -350*b + 9117 for b..

Answer:
29

Question:
Solve 0 = -128*i + 122*i for i..

Answer:
0