Task: Question Answering
Input (English): Suppose -3*q - 16 = -5*q + 2*i, -4*i - 2 = -q. Let d(f) = -f**3 + 5*f**2 + f. Suppose 0 = 2*a - 5 - 3. Calculate the least common multiple of q and d(a).
Output (English): 20