Vgln. eerste graad (reeks 1)

Bepaal de waarde van x.

\(-13x+4=6\)

\(\begin{align} & -13x \color{red}{+4}& = &6 \\\Leftrightarrow & -13x \color{red}{+4}\color{blue}{-4} & = &6\color{blue}{-4} \\\Leftrightarrow &-13x & = &2\\\Leftrightarrow & \color{red}{-13}x & = &2\\\Leftrightarrow & \frac{\color{red}{-13}x}{ \color{blue}-13} & = & \frac{2}{-13} \\\Leftrightarrow & \color{green}{ x = \frac{-2}{13} } & & \\ & V = \left\{ \frac{-2}{13} \right\} & \\\end{align}\)