Question:
Solve 3860*l - 49744 = -2807*l + 264*l + 468899 for l..

Answer:
81

Question:
Solve 12971*r - 172053 = 10240*r for r..

Answer:
63

Question:
Solve 2940*v = 2982*v - 210 for v..

Answer:
5

Question:
Solve 18 - 3 = -3*x for x..

Answer:
-5