I will give Brainliest :)
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Answer:
5+k = 11
Step-by-step explanation:
"Sum of a number" means addition.
"A number k and five" means you add the variable k and 5
"Is 11" tells you that the answer will be 11
You need to add K and 5 and get 11. Use this to set up an equation. Solve for K if need be. This results in k=6 but i believe that is not part of the prompt. Happy mathing ;)