Question:
Solve 103*t - 78*t = -100 for t..

Answer:
-4

Question:
Solve 4*t - 8715 = 585*t for t..

Answer:
-15

Question:
Solve -3641*t - 7 = -3634*t for t..

Answer:
-1

Question:
Solve 84 = 32*x - 25*x for x..

Answer:
12