Question:
Solve 50*x = 53*x + 6 for x..

Answer:
-2

Question:
Solve -59*u - 101*u = 746 - 2336 - 8330 for u..

Answer:
62

Question:
Solve 494*v = -406 - 1570 for v..

Answer:
-4

Question:
Solve -6*t + 21 - 9 = 0 for t..

Answer:
2