Question:
Solve -2540*q + 2184*q - 3204 = 0 for q..

Answer:
-9

Question:
Solve -299*n + 2774 = -1639 - 7977 + 430 for n..

Answer:
40

Question:
Solve 20*s + 13*s + 4903 = -2879 + 4812 for s..

Answer:
-90

Question:
Solve -9*d - 259 = -268 for d..

Answer:
1