Question:
Solve -16*r + 54 = 2*r for r..

Answer:
3

Question:
Solve -21181*m + 20820*m - 3971 = 0 for m..

Answer:
-11

Question:
Solve 3*h = 14*h - 3254 + 3298 for h..

Answer:
-4

Question:
Solve -77574 = 740*k - 30214 for k..

Answer:
-64