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11. Despeje las siguientes ecuacior a. \( a x-5=b x+2 \) b. \( \frac{5}{2 x+6}=\frac{3}{4 x+8} \)

Ask by Salinas Robbins. in Colombia
Feb 03,2025

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a. \( x = \frac{7}{a - b} \) b. \( x = -\frac{11}{7} \)

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The Deep Dive

Vamos a despejar cada una de las ecuaciones paso a paso. Para la primera ecuación \( a x - 5 = b x + 2 \): 1. Lleva todos los términos que contienen \( x \) de un lado y los constantes al otro lado: \( a x - b x = 2 + 5 \). 2. Simplificando, queda \( (a - b)x = 7 \). 3. Finalmente, despejamos \( x \): \( x = \frac{7}{a - b} \). Para la segunda ecuación \( \frac{5}{2 x + 6} = \frac{3}{4 x + 8} \): 1. Multiplica en cruz para eliminar las fracciones: \( 5(4 x + 8) = 3(2 x + 6) \). 2. Desarrollando ambos lados, obtenemos \( 20x + 40 = 6x + 18 \). 3. Lleva los términos con \( x \) a un lado y las constantes al otro: \( 20x - 6x = 18 - 40 \), lo que simplifica a \( 14x = -22 \). 4. Finalmente, despejamos \( x \): \( x = -\frac{22}{14} = -\frac{11}{7} \).

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