Question:
Solve 12*r + 34172 - 34316 = 0 for r..

Answer:
12

Question:
Solve -39 = 9*y + 4*y for y..

Answer:
-3

Question:
Solve 168*b - 1056 = -243*b + 477*b for b..

Answer:
-16

Question:
Solve -4383*k + 4437*k = 1890 for k..

Answer:
35