Question:
Solve 4 = t - 1 for t..

Answer:
5

Question:
Solve -7213 = -8*a - 7469 for a..

Answer:
-32

Question:
Solve -101*k = -36*k + 17*k - 656 for k..

Answer:
8

Question:
Solve 9*b - 87 = -204 for b..

Answer:
-13