Question:
Solve 5*r + 29 - 14 = 0 for r..

Answer:
-3

Question:
Solve -5*h - 13 + 23 = 15 for h..

Answer:
-1

Question:
Solve -403*c = -438*c + 280 for c..

Answer:
8

Question:
Solve -86901 = 8*m - 86845 for m..

Answer:
-7