Question:
Solve 125*n + 20*n = -40*n + 3330 for n..

Answer:
18

Question:
Solve -120*k + 37146 - 33906 = 0 for k..

Answer:
27

Question:
Solve 0 = 40*w + 9*w + 343 for w..

Answer:
-7

Question:
Solve 7600 + 5042 - 5642 = 140*q for q..

Answer:
50