Question
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a) \( \left\{\begin{array}{l}4 m+2 m=6 \\ 2 m-2 m=4\end{array}\right. \)

Ask by Kelley Ross. in Angola
Jan 23,2025

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Answer

O sistema de equações não tem solução porque a segunda equação resulta em uma contradição.

Solution

a) Resolver o sistema de equações: \[ \left\{ \begin{array}{l} 4m + 2m = 6 \\ 2m - 2m = 4 \end{array} \right. \] **Passo 1:** Simplificar a primeira equação. \[ 4m + 2m = 6 \\ 6m = 6 \\ m = \frac{6}{6} \\ m = 1 \] **Passo 2:** Substituir \( m = 1 \) na segunda equação. \[ 2m - 2m = 4 \\ 2(1) - 2(1) = 4 \\ 2 - 2 = 4 \\ 0 = 4 \] **Conclusão:** A segunda equação resulta em uma contradição (\( 0 = 4 \)), o que significa que não há nenhum valor de \( m \) que satisfaça ambas as equações simultaneamente. Portanto, o sistema é **inconsistente** e **não possui solução**.

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Let's break it down! In the first equation, \(4m + 2m = 6\), if we combine like terms, we get \(6m = 6\). Dividing both sides by 6 gives us \(m = 1\). Now, onto the second equation: \(2m - 2m = 4\). Here, \(2m - 2m\) simplifies to \(0 = 4\), which is a contradiction. This means the second equation has no valid solutions when \(m = 1\) from the first equation. So, the first equation gives us a value for \(m\), but the second one shows a contradiction, indicating that this system has no solution. What a twist!

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