Question:
Solve -13*l + 12 = -16*l for l..

Answer:
-4

Question:
Solve 581 + 357 = 24*x - 125 - 113 for x..

Answer:
49

Question:
Solve 21198 - 41022 + 20799 = -25*k for k..

Answer:
-39

Question:
Solve 0 = 254*a - 497 - 812 + 39 for a..

Answer:
5