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3. Reúnete con un compañero y resuelvan las desigualdades. \( \begin{array}{lll}\text { a) } 10 x-9 \leq 4 x+3 & \text { b) } 0.35 x-5 \geq 0.25 x+10 & \text { c) } \frac{4}{3} x+2<\frac{3}{4} x-12\end{array} \) Solución:

Ask by John Vargas. in Mexico
Mar 10,2025

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a) \(x \leq 2\) b) \(x \geq 150\) c) \(x < -24\)

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Para la desigualdad \( 10x - 9 \leq 4x + 3 \), primero resta \( 4x \) de ambos lados: \( 6x - 9 \leq 3 \). Luego, suma 9 a ambos lados: \( 6x \leq 12 \). Finalmente, divide por 6: \( x \leq 2 \). Para \( 0.35x - 5 \geq 0.25x + 10 \), resta \( 0.25x \) de ambos lados: \( 0.10x - 5 \geq 10 \). Suma 5 a ambos lados: \( 0.10x \geq 15 \). Divide por 0.10: \( x \geq 150 \). Por último, para \( \frac{4}{3}x + 2 < \frac{3}{4}x - 12 \), resta \( \frac{3}{4}x \) y 2 de ambos lados. Multiplica todo por 12 para deshacerse de los denominadores: 16x + 24 < 9x - 144. Luego, resuelve \( 7x < -168 \), lo que da \( x < -24 \). Así que, las soluciones son: a) \( x \leq 2 \) b) \( x \geq 150 \) c) \( x < -24 \) ¡Listo para seguir resolviendo más desigualdades!

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