Vgln. eerste graad (reeks 1)

Bepaal de waarde van x.

\(8x-10=-2\)

\(\begin{align} & 8x \color{red}{-10}& = &-2 \\\Leftrightarrow & 8x \color{red}{-10}\color{blue}{+10} & = &-2\color{blue}{+10} \\\Leftrightarrow &8x & = &8\\\Leftrightarrow & \color{red}{8}x & = &8\\\Leftrightarrow & \frac{\color{red}{8}x}{ \color{blue}8} & = & \frac{8}{8} \\\Leftrightarrow & \color{green}{ x = 1 } & & \\ & V = \left\{ 1 \right\} & \\\end{align}\)