Question:
Solve 50*b - 234*b + 72*b = 200*b + 17784 for b..

Answer:
-57

Question:
Solve 1896*r - 7752 = -1897*r + 3895*r for r..

Answer:
-76

Question:
Solve 13634 + 16816 = -1689*z - 20220 for z..

Answer:
-30

Question:
Solve -672*c - 66 = -683*c for c..

Answer:
6