✅ Após montar e resolver a equação do primeiro grau, concluímos que o valor procurado é:
[tex]\Large\displaystyle\text{$\begin{gathered}\boxed{\boxed{\:\:\:\bf x = 20\:\:\:}}\end{gathered}$}[/tex]
Montando e esolvendo equação do primeiro grau:
[tex]\Large\displaystyle\text{$\begin{gathered} \tt 4x + 5x = 180\end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \tt 9x = 180\end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered}\tt x = \frac{180}{9}\end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered}\tt x = 20\end{gathered}$}[/tex]
✅ Portanto, o valor do número é:
[tex]\Large\displaystyle\text{$\begin{gathered}\tt x = 20\end{gathered}$}[/tex]
[tex]\LARGE\displaystyle\text{$\begin{gathered} \underline{\boxed{\boldsymbol{\:\:\:Bons \:estudos!!\:\:\:Boa\: sorte!!\:\:\:}}}\end{gathered}$}[/tex]
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