Question:
Solve 294 = 31*c - 1003 + 367 for c..

Answer:
30

Question:
Solve 278*n - 818 - 771 = 73*n + 2101 for n..

Answer:
18

Question:
Solve 27274 - 2823 + 7333 = 1096*r for r..

Answer:
29

Question:
Solve -962 = 211*p - 256*p - 17 for p..

Answer:
21