Question:
Solve 34*v + 152 = 15*v for v..

Answer:
-8

Question:
Solve 0 = -1708*u + 397*u - 39330 for u..

Answer:
-30

Question:
Solve -101*i = 31*i + 18*i + 150 for i..

Answer:
-1

Question:
Solve 560 = -5033*r + 5005*r for r..

Answer:
-20