Question
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Resolver para \( x \) : \[ \frac{8}{x+2}=\frac{7}{5} \] Simplificar su respuesta tanto como sea posible. \( x=\| \square \)

Ask by Bird Bush. in Ecuador
Feb 25,2025

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Tutor-Verified Answer

Answer

\( x = \frac{26}{7} \)

Solution

Para resolver la ecuación   8/(x + 2) = 7/5 multiplicamos en cruz para eliminar los denominadores:   8 · 5 = 7 · (x + 2) lo que da:   40 = 7(x + 2) Ahora, dividimos ambos lados entre 7:   x + 2 = 40/7 Finalmente, restamos 2 de ambos lados para despejar a x:   x = 40/7 − 2 Para simplificar, expresamos 2 como 14/7:   x = (40 − 14)/7   x = 26/7 Por lo tanto, la solución simplificada es:   x = 26/7

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The Deep Dive

Primero, multiplicamos ambos lados de la ecuación por \( (x + 2) \) para eliminar el denominador: \[ 8 = \frac{7}{5} (x + 2) \] Luego, multiplicamos ambos lados por 5 para deshacernos de la fracción: \[ 40 = 7(x + 2) \] Distribuyendo el 7 en el lado derecho: \[ 40 = 7x + 14 \] Restamos 14 de ambos lados: \[ 26 = 7x \] Finalmente, dividimos entre 7: \[ x = \frac{26}{7} \] Por lo tanto, la solución simplificada es: \( x = \frac{26}{7} \)

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