Task: Question Answering
Input (English): Let s be (2 - 0) + -4 + 12. Let c(u) = -5*u + 4*u - 6*u + s - u**2. Let g be c(-7). Solve 0*k = -3*k - 5*n + g, n - 5 = 0 for k.
Output (English): -5