Question:
Solve 0 = -130*t - 299*t - 4446 + 1443 for t..

Answer:
-7

Question:
Solve -7*r - 7 = 14 for r..

Answer:
-3

Question:
Solve 98*z - 816 = -4*z for z..

Answer:
8

Question:
Solve -382 + 646 = -33*n for n..

Answer:
-8