Task: Question Answering
Input (English): Let d(j) = -j**3 + 4*j**2 + 3*j - 6. Let n be d(4). Let s = -6 + n. Suppose 5*p + 2*r - 30 = s, -2*r + 3 = -7. Calculate the greatest common divisor of p and 1.
Output (English): 1