Question:
Solve -63 = -16*i + 9*i for i..

Answer:
9

Question:
Solve -3024 = 163*c + 173*c for c..

Answer:
-9

Question:
Solve 56*m - 36 + 909 = -41*m for m..

Answer:
-9

Question:
Solve 9*z + 3 = 8*z for z..

Answer:
-3