Answer: (It took over a million computing hours to solve the solution)
Step-by-step explanation: Hello! Do you have to find k? If you do, then it is supposed to be the hardest math problem solved only by computers. I do not know how to solve it if you have to, but the answer is x3 + y3 + x3 = 42/33. Scientists tested all possible integers from 1-100 and they found that only 42 and 33 worked. 42 is the correct answer by computers. Hope this helps!