Question:
Solve 3815 + 82 + 90 = 76*c - 345 for c..

Answer:
57

Question:
Solve -3*a + 12 = 3*a for a..

Answer:
2

Question:
Solve 122*a + 801 + 986 = 2504 - 961 for a..

Answer:
-2

Question:
Solve -82 - 6 = -11*x for x..

Answer:
8