Question:
Solve -x + 25*x = -1408 + 1384 for x..

Answer:
-1

Question:
Solve -2400 - 6347 + 275 = -706*w for w..

Answer:
12

Question:
Solve 0 = -18*k - 63 + 99 for k..

Answer:
2

Question:
Solve 1761 + 423 = -85*t - 71*t for t..

Answer:
-14