Bepaal de waarde van x. Meerdere manieren van oplossen mogelijk
\(13x-1=-4+2x\)
\(\begin{align} & 13x \color{red}{-1}& = & -4 \color{red}{ +2x } \\\Leftrightarrow & 13x \color{red}{-1}\color{blue}{+1-2x }
& = & -4 \color{red}{ +2x }\color{blue}{+1-2x } \\\Leftrightarrow & 13x \color{blue}{-2x }
& = & -4 \color{blue}{+1} \\\Leftrightarrow &11x
& = &-3\\\Leftrightarrow & \color{red}{11}x
& = &-3\\\Leftrightarrow & \frac{\color{red}{11}x}{ \color{blue}{ 11}}
& = & \frac{-3}{11} \\\Leftrightarrow & \color{green}{ x = \frac{-3}{11} } & & \\ & V = \left\{ \frac{-3}{11} \right\} & \\\end{align}\)