Question:
Solve -13*f - 17*f - 17*f - 282 = 0 for f..

Answer:
-6

Question:
Solve -8396 = -23*m - 8580 for m..

Answer:
-8

Question:
Solve 115 = 20*m + 235 for m..

Answer:
-6

Question:
Solve 0 = 145*z + 1767 + 2005 + 1782 - 624 for z..

Answer:
-34