Resposta :

[tex]\frac{24}{x}=\frac{4+4+4+4}{4+4+4}\\\\\\\frac{24^{\div8}}{x}=\frac{16^{\div8}}{12}\\\\\\\frac{3}{x}=\frac{2^{\div2}}{12^{\div2}}\\\\\\\frac{3}{x}=\frac{1}{6}\\\\\boxed{x=18}[/tex]

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