Vgln. eerste graad (reeks 2)

Bepaal de waarde van x. Meerdere manieren van oplossen mogelijk

\(4x-2=15+5x\)

\(\begin{align} & 4x \color{red}{-2}& = & 15 \color{red}{ +5x } \\\Leftrightarrow & 4x \color{red}{-2}\color{blue}{+2-5x } & = & 15 \color{red}{ +5x }\color{blue}{+2-5x } \\\Leftrightarrow & 4x \color{blue}{-5x } & = & 15 \color{blue}{+2} \\\Leftrightarrow &-x & = &17\\\Leftrightarrow & \color{red}{-}x & = &17\\\Leftrightarrow & \frac{\color{red}{-}x}{ \color{blue}{ -1}} & = & \frac{17}{-1} \\\Leftrightarrow & \color{green}{ x = -17 } & & \\ & V = \left\{ -17 \right\} & \\\end{align}\)