Question

Como se resolve 5x-3(x+2)=15

Answer 1

5x - 3(x - 2) = 15
5x - 3x - 6 = 15
2x = 15 + 6 
2x = 21
x = 10,5  

Answer 2

✅ Após resolver a equação do primeiro grau, concluímos que o valor de "x" é:

                  $\Large\displaystyle\text{ \begin{gathered}\boxed{\boxed{\:\:\:\bf x = \frac{21}{2} \:\:\:}}\end{gathered} }$

Resolvendo equação do primeiro grau:

       $\Large\displaystyle\begin{gathered} 5x - 3(x + 2) = 15\end{gathered}$

           $\Large\displaystyle\begin{gathered} 5x - 3x - 6 = 15\end{gathered}$

                    $\Large\displaystyle\begin{gathered} 5x - 3x = 15 + 6\end{gathered}$

                                $\Large\displaystyle\begin{gathered} 2x = 21\end{gathered}$

                                  $\Large\displaystyle\begin{gathered} x = \frac{21}{2} \end{gathered}$

✅ Portanto, o valor de "x" é:

                    $\Large\displaystyle\begin{gathered} x = \frac{21}{2} \end{gathered}$

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