Question:
Solve -45 = -213*a + 218*a for a..

Answer:
-9


Question:
Solve -6885*k - 68505 = 76080 for k..

Answer:
-21


Question:
Solve -1432 + 581 = -142*j + 422*j + 1669 for j..

Answer:
-9


Question:
Solve 204*b + 348 = 889 + 2519 for b..

Answer:

15