Question:
Solve 0 = -9*k - 18*k - k - 16*k for k..

Answer:
0

Question:
Solve -47*q = 307 - 636 for q..

Answer:
7

Question:
Solve 0 = b - b - 2*b for b..

Answer:
0

Question:
Solve -38864 = -64*s - 38544 for s..

Answer:
5