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Correct!

On one single line, declare three variables with the following names and values:

firstName = "John"
lastName = "Doe"
age = 35

let firstName = "John", lastName = "Doe", age = 35;
let firstName = "John", lastName = 'Doe', age = 35;

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Correct!

let  = "John" lastName =   = ;

  
  
  




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