Task: Question Answering
Input (English): Suppose -4*i + 12 = 3*x, -3*x = -5*i - x + 38. Suppose 5 = 5*a, l - i*l = a - 16. Solve 5*z + 18 = y - 4*y, -11 = l*z + 2*y for z.
Output (English): -3