Respuesta :

Given that the rectangles are similar, we know that:

[tex]\frac{4}{8}=\frac{12}{x},[/tex]

which is equivalent to:

[tex]\frac{x}{12}=\frac{8}{4}.[/tex]

Answer:

[tex]\frac{x}{12}=\frac{8}{4}.[/tex]

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