Question:
Solve 39*m = 33*m for m..

Answer:
0

Question:
Solve -147*r = 2523 - 612 for r..

Answer:
-13

Question:
Solve 70*c - 443 + 23 = 0 for c..

Answer:
6

Question:
Solve 15*h + 39 - 24 = 0 for h..

Answer:
-1