Question:
Solve 174*k - 678 = -156 for k..

Answer:
3

Question:
Solve 455*i - 1224 = -1224 for i..

Answer:
0

Question:
Solve 1804*c = 1400*c for c..

Answer:
0

Question:
Solve -65*c + 4 = -253*c + 380 for c..

Answer:
2