Question:
Solve -29*d - 47*d - 159*d + 3525 = 0 for d..

Answer:
15

Question:
Solve 8*o + 16984 - 16904 = 0 for o..

Answer:
-10

Question:
Solve 323*u = -79*u + 72*u - 3581 - 2689 for u..

Answer:
-19

Question:
Solve 14*k - 204 = 4*k - 7*k for k..

Answer:
12