Bepaal de waarde van x.
- \(-4x-3=-8\)
- \(-2x+13=12\)
- \(-x+7=5\)
- \(13x-5=-13\)
- \(12x+5=-11\)
- \(12x+10=-5\)
- \(14x-4=-10\)
- \(-9x-4=4\)
- \(-6x-8=-8\)
- \(-5x+6=4\)
- \(14x-6=-8\)
- \(3x-3=-3\)
Bepaal de waarde van x.
Verbetersleutel
- \(\begin{align} & -4x \color{red}{-3}& = &-8 \\\Leftrightarrow & -4x \color{red}{-3}\color{blue}{+3}
& = &-8\color{blue}{+3} \\\Leftrightarrow &-4x
& = &-5\\\Leftrightarrow & \color{red}{-4}x
& = &-5\\\Leftrightarrow & \frac{\color{red}{-4}x}{ \color{blue}-4}
& = & \frac{-5}{-4} \\\Leftrightarrow & \color{green}{ x = \frac{5}{4} } & & \\ & V = \left\{ \frac{5}{4} \right\} & \\\end{align}\)
- \(\begin{align} & -2x \color{red}{+13}& = &12 \\\Leftrightarrow & -2x \color{red}{+13}\color{blue}{-13}
& = &12\color{blue}{-13} \\\Leftrightarrow &-2x
& = &-1\\\Leftrightarrow & \color{red}{-2}x
& = &-1\\\Leftrightarrow & \frac{\color{red}{-2}x}{ \color{blue}-2}
& = & \frac{-1}{-2} \\\Leftrightarrow & \color{green}{ x = \frac{1}{2} } & & \\ & V = \left\{ \frac{1}{2} \right\} & \\\end{align}\)
- \(\begin{align} & -x \color{red}{+7}& = &5 \\\Leftrightarrow & -x \color{red}{+7}\color{blue}{-7}
& = &5\color{blue}{-7} \\\Leftrightarrow &-x
& = &-2\\\Leftrightarrow & \color{red}{-}x
& = &-2\\\Leftrightarrow & \frac{\color{red}{-}x}{ \color{blue}-1}
& = & \frac{-2}{-1} \\\Leftrightarrow & \color{green}{ x = 2 } & & \\ & V = \left\{ 2 \right\} & \\\end{align}\)
- \(\begin{align} & 13x \color{red}{-5}& = &-13 \\\Leftrightarrow & 13x \color{red}{-5}\color{blue}{+5}
& = &-13\color{blue}{+5} \\\Leftrightarrow &13x
& = &-8\\\Leftrightarrow & \color{red}{13}x
& = &-8\\\Leftrightarrow & \frac{\color{red}{13}x}{ \color{blue}13}
& = & \frac{-8}{13} \\\Leftrightarrow & \color{green}{ x = \frac{-8}{13} } & & \\ & V = \left\{ \frac{-8}{13} \right\} & \\\end{align}\)
- \(\begin{align} & 12x \color{red}{+5}& = &-11 \\\Leftrightarrow & 12x \color{red}{+5}\color{blue}{-5}
& = &-11\color{blue}{-5} \\\Leftrightarrow &12x
& = &-16\\\Leftrightarrow & \color{red}{12}x
& = &-16\\\Leftrightarrow & \frac{\color{red}{12}x}{ \color{blue}12}
& = & \frac{-16}{12} \\\Leftrightarrow & \color{green}{ x = \frac{-4}{3} } & & \\ & V = \left\{ \frac{-4}{3} \right\} & \\\end{align}\)
- \(\begin{align} & 12x \color{red}{+10}& = &-5 \\\Leftrightarrow & 12x \color{red}{+10}\color{blue}{-10}
& = &-5\color{blue}{-10} \\\Leftrightarrow &12x
& = &-15\\\Leftrightarrow & \color{red}{12}x
& = &-15\\\Leftrightarrow & \frac{\color{red}{12}x}{ \color{blue}12}
& = & \frac{-15}{12} \\\Leftrightarrow & \color{green}{ x = \frac{-5}{4} } & & \\ & V = \left\{ \frac{-5}{4} \right\} & \\\end{align}\)
- \(\begin{align} & 14x \color{red}{-4}& = &-10 \\\Leftrightarrow & 14x \color{red}{-4}\color{blue}{+4}
& = &-10\color{blue}{+4} \\\Leftrightarrow &14x
& = &-6\\\Leftrightarrow & \color{red}{14}x
& = &-6\\\Leftrightarrow & \frac{\color{red}{14}x}{ \color{blue}14}
& = & \frac{-6}{14} \\\Leftrightarrow & \color{green}{ x = \frac{-3}{7} } & & \\ & V = \left\{ \frac{-3}{7} \right\} & \\\end{align}\)
- \(\begin{align} & -9x \color{red}{-4}& = &4 \\\Leftrightarrow & -9x \color{red}{-4}\color{blue}{+4}
& = &4\color{blue}{+4} \\\Leftrightarrow &-9x
& = &8\\\Leftrightarrow & \color{red}{-9}x
& = &8\\\Leftrightarrow & \frac{\color{red}{-9}x}{ \color{blue}-9}
& = & \frac{8}{-9} \\\Leftrightarrow & \color{green}{ x = \frac{-8}{9} } & & \\ & V = \left\{ \frac{-8}{9} \right\} & \\\end{align}\)
- \(\begin{align} & -6x \color{red}{-8}& = &-8 \\\Leftrightarrow & -6x \color{red}{-8}\color{blue}{+8}
& = &-8\color{blue}{+8} \\\Leftrightarrow &-6x
& = &0\\\Leftrightarrow & \color{red}{-6}x
& = &0\\\Leftrightarrow & \frac{\color{red}{-6}x}{ \color{blue}-6}
& = & \frac{0}{-6} \\\Leftrightarrow & \color{green}{ x = 0 } & & \\ & V = \left\{ 0 \right\} & \\\end{align}\)
- \(\begin{align} & -5x \color{red}{+6}& = &4 \\\Leftrightarrow & -5x \color{red}{+6}\color{blue}{-6}
& = &4\color{blue}{-6} \\\Leftrightarrow &-5x
& = &-2\\\Leftrightarrow & \color{red}{-5}x
& = &-2\\\Leftrightarrow & \frac{\color{red}{-5}x}{ \color{blue}-5}
& = & \frac{-2}{-5} \\\Leftrightarrow & \color{green}{ x = \frac{2}{5} } & & \\ & V = \left\{ \frac{2}{5} \right\} & \\\end{align}\)
- \(\begin{align} & 14x \color{red}{-6}& = &-8 \\\Leftrightarrow & 14x \color{red}{-6}\color{blue}{+6}
& = &-8\color{blue}{+6} \\\Leftrightarrow &14x
& = &-2\\\Leftrightarrow & \color{red}{14}x
& = &-2\\\Leftrightarrow & \frac{\color{red}{14}x}{ \color{blue}14}
& = & \frac{-2}{14} \\\Leftrightarrow & \color{green}{ x = \frac{-1}{7} } & & \\ & V = \left\{ \frac{-1}{7} \right\} & \\\end{align}\)
- \(\begin{align} & 3x \color{red}{-3}& = &-3 \\\Leftrightarrow & 3x \color{red}{-3}\color{blue}{+3}
& = &-3\color{blue}{+3} \\\Leftrightarrow &3x
& = &0\\\Leftrightarrow & \color{red}{3}x
& = &0\\\Leftrightarrow & \frac{\color{red}{3}x}{ \color{blue}3}
& = & \frac{0}{3} \\\Leftrightarrow & \color{green}{ x = 0 } & & \\ & V = \left\{ 0 \right\} & \\\end{align}\)