Question:
Solve -56*c + 51*c = -15 for c..

Answer:
3

Question:
Solve -176*u + 11907 = 10499 for u..

Answer:
8

Question:
Solve -245*t + 177*t + 884 = 0 for t..

Answer:
13

Question:
Solve -3638*b + 9 - 135 = -3620*b for b..

Answer:
-7