Question:
Solve -2*v + 55 - 43 = 0 for v..

Answer:
6

Question:
Solve -3901*r = -1698*r + 178443 for r..

Answer:
-81

Question:
Solve 60468 = 2436*k - 64072 + 30930 - 37934 for k..

Answer:
54

Question:
Solve -79469*a - 1050 = -79511*a for a..

Answer:
25