✅ Após resolver a equação do primeiro grau, concluímos que o valor de "x" é:
[tex]\Large\displaystyle\text{$\begin{gathered}\boxed{\boxed{\:\:\:\bf x = 3\:\:\:}}\end{gathered}$}[/tex]
Montando e resolvendo equação do primeiro grau:
[tex]\Large\displaystyle\text{$\begin{gathered} 2x + 15 = x + 18\end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} 2x - x = 18 - 15\end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} x = 3\end{gathered}$}[/tex]
✅ Portanto, o valor de "x" é:
[tex]\Large\displaystyle\text{$\begin{gathered} x = 3\end{gathered}$}[/tex]
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