Question:
Solve 439559*k = 439703*k + 5760 for k..

Answer:
-40

Question:
Solve 105*n - 205 - 154 = 46 + 15 for n..

Answer:
4

Question:
Solve -1146*u + 4613*u + 116499 = -323589 + 124591 for u..

Answer:
-91

Question:
Solve 83*m = 194*m - 1443 for m..

Answer:
13