Question:
Solve 0 = 122*d + 393 + 217 for d..

Answer:
-5

Question:
Solve -423*q + 463*q + 267 = 1067 for q..

Answer:
20

Question:
Solve 5*v - 28 = -28 for v..

Answer:
0

Question:
Solve 77*i - 86*i = 54 for i..

Answer:
-6