Write down the solution for this math problem: Solve -536*k = -271*k - 268*k - 33 for k.
answer: -11

Write down the solution for this math problem: Solve 2305669*b + 220 = 2305658*b for b.
answer: -20

Write down the solution for this math problem: Solve 0 = -14*k + 71 - 29 for k.
answer: 3

Write down the solution for this math problem: Solve 9091*r - 179765 = 228144 + 255734 for r.
answer:
73