Task: Question Understanding
Input (English): Suppose -a - 3 = 2, -5*y + 5 = 4*a. Suppose y*z - 4 = -4*g, -4*g = -0*z + 4*z. Solve -5*b = 5*i + 27 + 13, -13 = -z*b + 5*i for b.
Output (English): algebra