Question:
Solve -5153*b = -5038*b + 2300 for b..

Answer:
-20

Question:
Solve -25*b = -118*b + 61*b - 147*b - 9487 for b..

Answer:
-53

Question:
Solve 7464*m - 7487*m = -207 for m..

Answer:
9

Question:
Solve -84*z + 25 = -89*z for z..

Answer:
-5