Write down the solution for this math problem: Solve -1317464*k + 18407 = -1317697*k for k.
answer: -79

Write down the solution for this math problem: Solve -3 = -4*l - 11 for l.
answer: -2

Write down the solution for this math problem: Solve 0 = -10*r + 17 - 7 for r.
answer: 1

Write down the solution for this math problem: Solve 316*z + 1087 + 85727 = -3818*z for z.
answer:
-21