Question:
Solve 10*n - 65 + 194 - 39 = 0 for n..

Answer:
-9

Question:
Solve 13*x = 4*x - 45 for x..

Answer:
-5

Question:
Solve -2558*z = -2531*z - 162 for z..

Answer:
6

Question:
Solve 1447 = -8*m + 1423 for m..

Answer:
-3