Vgln. eerste graad (reeks 3)

Reeks met haakjes

\(6(4x+2)=2+(5+x)\)

\(\begin{align} & \color{red}{6} (4x+2)& = & 2 \color{red}{+} (5+x) \\\Leftrightarrow & 24x+12& = &2+5+x \\\Leftrightarrow & 24x \color{red}{+12} & = &7 \color{red}{+x} \\\Leftrightarrow & 24x \color{red}{+12} \color{blue}{-12} \color{blue}{-x} & = &7 \color{red}{+x} \color{blue}{-x} \color{blue}{-12} \\\Leftrightarrow & 24x-x& = &7-12 \\\Leftrightarrow & 23x& = &-5 \\\Leftrightarrow & \frac{23x}{ \color{red}{23} }& = &\frac{-5}{ \color{red}{23} } \\\Leftrightarrow & x = \frac{-5}{23} & & \\ & V = \left\{ \frac{-5}{23} \right\} & \\\end{align}\)