Question:
Solve -7486 = 7*z + 387*z for z..

Answer:
-19

Question:
Solve -303*k = -232*k - 1207 for k..

Answer:
17

Question:
Solve 0 = -805*n - 895*n - 118143 - 89257 for n..

Answer:
-122

Question:
Solve 904*f + 4110 - 23998 = 0 for f..

Answer:
22