Question:
Solve 220486 = -679*u + 212338 for u..

Answer:
-12

Question:
Solve 21*w - 14*w + 28 = 0 for w..

Answer:
-4

Question:
Solve -92*r - 161*r = -3289 for r..

Answer:
13

Question:
Solve 364 = -44*q + 56 for q..

Answer:
-7