Question
1. Resolver la ecuación. \[ 5(2 x-4)=2(3 x+4) \] \( \begin{array}{lll}\text { A) } 3 & \text { B) } 5 & \text { C) } 7 \\ \text { D) } 9 & & \text { E) } 11\end{array} \)
Ask by Warner Chan. in Peru
Mar 18,2025
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Tutor-Verified Answer
Answer
La respuesta es 7, opción C.
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The Deep Dive
Primero, vamos a resolver la ecuación paso a paso. 1. Expandimos ambos lados de la ecuación: \[ 5(2x - 4) = 10x - 20 \] \[ 2(3x + 4) = 6x + 8 \] 2. Igualamos las dos expresiones: \[ 10x - 20 = 6x + 8 \] 3. Restamos \(6x\) de ambos lados: \[ 10x - 6x - 20 = 8 \] \[ 4x - 20 = 8 \] 4. Sumamos 20 a ambos lados: \[ 4x = 28 \] 5. Dividimos ambos lados entre 4: \[ x = 7 \] La respuesta correcta es C) 7.