Question:
Solve 4*r - 17 = -25 for r..

Answer:
-2

Question:
Solve 11006 = 528*y - 2194 for y..

Answer:
25

Question:
Solve -400*w - 959 + 5103 = -3456 for w..

Answer:
19

Question:
Solve 4535 = -l + 4532 for l..

Answer:
-3