Task: Question Understanding
Input (English): Suppose i = w - 15 + 48, -100 = -4*i - 4*w. Let f = -3 + -4. Let k be (-9 - -1)/(5 + f). Solve -4*h - k*v = v - i, 0 = -5*h + 4*v - 15 for h.
Output (English): algebra