Respuesta :

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\textsf{k + 2k}\\\large\textsf{= 7 + 2(7)}}\\\large\textsf{= 7 + 14}\\\large\textsf{= 21}\\\\\boxed{\large\text{Therefore. your answer is: \textsf{21}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

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