Question:
Solve 59*u = 6773 - 6794 + 5449 for u..

Answer:
92

Question:
Solve -45*b = -9*b - 108 for b..

Answer:
3

Question:
Solve -12*r + 36 = -24 for r..

Answer:
5

Question:
Solve 2*n + 8 = 14*n - 20*n for n..

Answer:
-1