Question:
Solve 2156*x - 2284*x + 516 = 3204 for x..

Answer:
-21

Question:
Solve -9*w + 111*w + 3707 = 5645 for w..

Answer:
19

Question:
Solve 16 = 79*l - 81*l for l..

Answer:
-8

Question:
Solve 30*n = -3*n for n..

Answer:
0