Question:
Solve -12*t = -26*t + 84 for t..

Answer:
6

Question:
Solve -44*u - 614 - 65 = 69 for u..

Answer:
-17

Question:
Solve -1307*x - 1189*x - 20720 = -2866*x for x..

Answer:
56

Question:
Solve 0 = 25*d - 43*d - 30 + 12 for d..

Answer:
-1