Question:
Solve 0 = -x + 646947 - 646929 for x..

Answer:
18

Question:
Solve 0 = -8*u - 47 + 63 for u..

Answer:
2

Question:
Solve -17306 - 46861 = 1967*z + 4678 for z..

Answer:
-35

Question:
Solve 2683*v = -3250*v + 5364*v - 70556 for v..

Answer:
-124