Question:
Solve 5253*r - 5218*r = 12 - 187 for r..

Answer:
-5

Question:
Solve 1 = 7*m + 29 for m..

Answer:
-4

Question:
Solve -263*h + 457*h - 432 = -3604 - 2648 for h..

Answer:
-30

Question:
Solve 0 = -1885*b - 14726 - 13549 for b..

Answer:
-15