Explicación paso a paso:
[tex](3x \times 2) + (x \times 2) = 768 \\ 6x + 2x = 768 \\ 8x = 768 \\ x = \frac{768}{8} \\ x = 96 \\ \\ ancho = 96cm \\ largo = 288[/tex]
[tex]ancho = x = 96cm \\ largo = 3x = 288cm[/tex]
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Explicación paso a paso:
[tex](3x \times 2) + (x \times 2) = 768 \\ 6x + 2x = 768 \\ 8x = 768 \\ x = \frac{768}{8} \\ x = 96 \\ \\ ancho = 96cm \\ largo = 288[/tex]
[tex]ancho = x = 96cm \\ largo = 3x = 288cm[/tex]