Question:
Solve 252*b - 51*b - 1407 = 0 for b..

Answer:
7

Question:
Solve 45*x = -19*x + 1 - 1 for x..

Answer:
0

Question:
Solve -165*s - 561 = 22*s for s..

Answer:
-3

Question:
Solve 0 = 92*n - 55*n + 108*n for n..

Answer:
0