Question:
Solve -216 = 50*z + 4*z for z..

Answer:
-4

Question:
Solve 8 = -8*u - 24 for u..

Answer:
-4

Question:
Solve 628*k - 626*k = 6 for k..

Answer:
3

Question:
Solve -11*y - 23563 + 23475 = 0 for y..

Answer:
-8