✅ Resolvendo equação do primeiro grau:
Seja a equação do primeiro grau:
[tex]\large\displaystyle\text{$\begin{gathered}7x + 4 = 19 \end{gathered}$}[/tex]
Resolvendo a equação temos:
[tex]\large\displaystyle\text{$\begin{gathered}7x + 4 = 19 \end{gathered}$}[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}7x = 19 - 4 \end{gathered}$}[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}7x = 15 \end{gathered}$}[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}x = \frac{15}{7} \end{gathered}$}[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}x \cong 2,1428 \end{gathered}$}[/tex]
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