Task: Question Answering
Input (English): Suppose -3*r + 9 = 3*q - 2*r, -4*q - r + 13 = 0. Let w be -2 - 6*(-2)/q. Solve -3*i - c = -6*c + w, -4*i - c - 9 = 0 for i.
Output (English): -2