Task: Question Understanding
Input (English): Suppose 0 = -3*w + 4*c - 18 + 39, -2*w + 14 = -2*c. Suppose w*o = 3*o + 8. Solve -5 = d + 3*u + o*u, -d + 3*u - 5 = 0 for d.
Output (English): algebra