Question:
Solve 795*z = 5838*z - 403440 for z..

Answer:
80

Question:
Solve -9*t = -72 + 99 for t..

Answer:
-3

Question:
Solve 12586*d - 10726 = 4206*d + 89834 for d..

Answer:
12

Question:
Solve -231*b - 15*b = 984 for b..

Answer:
-4