antwoorden
$
\begin{array}{l}
a.\left\{ \begin{array}{l}
2x - 3y = 10 \\
- x + 6y = 6 \\
\end{array} \right. \to \left( {8\frac{2}{3},2\frac{4}{9}} \right) \\
b.\left\{ \begin{array}{l}
3x + 5y = 0 \\
6y - 2x = 12 \\
\end{array} \right. \to \left( { - 2\frac{1}{7},1\frac{2}{7}} \right) \\
c.\left\{ \begin{array}{l}
x + y = 1 \\
x + 2y = 100 \\
\end{array} \right. \to \left( { - 98,99} \right) \\
\end{array}
$