Question:
Solve -67*x = 64*x - 786 for x..

Answer:
6

Question:
Solve 1677*t - 1641*t + 77 = -571 for t..

Answer:
-18

Question:
Solve -16689 = 563*a - 4303 for a..

Answer:
-22

Question:
Solve -51*i + 42*i - 76820 = 477*i + 349*i for i..

Answer:
-92