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Grade 8 Unit 4 Section A Checkpoint 1. a. Label the arrows to describe the moves that create equivalent equations. \( \begin{array}{r}3 x=12 \\ 3 x+3=15 \\ 3(x+1)=15\end{array} \)

Ask by Mcguire Burgess. in the United States
Jan 21,2025

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Answer

Para crear ecuaciones equivalentes, se realizan los siguientes movimientos: 1. **Sumar 3 a ambos lados** de \( 3x = 12 \) para obtener \( 3x + 3 = 15 \). 2. **Factorizar el 3** en \( 3x + 3 = 15 \) para obtener \( 3(x + 1) = 15 \). Estos pasos mantienen la equivalencia de la ecuación original.

Solution

Claro, aquí tienes cómo etiquetar las flechas que describen los movimientos para crear ecuaciones equivalentes: 1. **De \( 3x = 12 \) a \( 3x + 3 = 15 \):** **Agregar 3 a ambos lados de la ecuación.** *(Sumar 3 a ambos lados)* 2. **De \( 3x + 3 = 15 \) a \( 3(x + 1) = 15 \):** **Factorizar el 3 del lado izquierdo de la ecuación.** *(Factorizar el 3)* --- **Resumen de las flechas etiquetadas:** - **Flecha 1:** Sumar 3 a ambos lados. - **Flecha 2:** Factorizar el 3. Esto muestra cómo cada paso mantiene la equivalencia de la ecuación original mientras se realizan las transformaciones necesarias.

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Bonus Knowledge

To create equivalent equations from the given equations, you can label the arrows as follows: 1. **The first arrow** (from \(3x=12\) to \(3x+3=15\)) represents adding the same value (3) to both sides of the equation, adhering to the principle that equality is preserved when you add the same quantity to both sides. 2. **The second arrow** (from \(3x+3=15\) to \(3(x+1)=15\)) indicates factoring out the common factor of 3, which is a way to express the left side now in a different yet equivalent form. Factoring is a useful skill in simplifying expressions and solving equations!

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