Question:
Solve 9404*s - 9407*s - 18 = 0 for s..

Answer:
-6

Question:
Solve 12*b = -2*b + 98 for b..

Answer:
7

Question:
Solve -60 = 22*k - 10*k for k..

Answer:
-5

Question:
Solve 22*i + 7*i = 29 for i..

Answer:
1