Question:
Solve 6015 = -467*z - 84*z - 597 for z..

Answer:
-12

Question:
Solve 0 = 892*s + 778 - 5238 for s..

Answer:
5

Question:
Solve -4*k = -8 + 32 for k..

Answer:
-6

Question:
Solve 392*r - 262*r - 1820 = 0 for r..

Answer:
14