Question:
Solve 204*r + 164*r + 18*r = -42*r - 18832 for r..

Answer:
-44

Question:
Solve -462*d - 56984 = 1214*d for d..

Answer:
-34

Question:
Solve 5*w + 3066 = 3056 for w..

Answer:
-2

Question:
Solve 23 - 62 = 2*h + 11*h for h..

Answer:
-3