Combinatie
\(\left\{\begin{matrix}-9x-10y=-5\\-2x-3y=2\end{matrix}\right.\)
\(\left\{\begin{matrix}-9x-10y=-5\\-2x-3y=2\end{matrix}\right.\\ \Leftrightarrow \left\{\begin{array}{c|c|c}-9x-10y=-5& \color{red}{2.} & \color{blue}{3.} \\-2x-3y=2& \color{red}{-9.} & \color{blue}{-10.} \end{array}\right.\\ \Leftrightarrow \left\{\begin{matrix} \color{red}{\underline{-18x+18x}-20y+27y=-10-18} \\ \color{blue}{-27x+20x\underline{-30y+30y}=-15-20} \end{matrix}\right.\\ \Leftrightarrow \left\{\begin{matrix}7y=-28 \\-7x=-35\end{matrix}\right.\\ \Leftrightarrow \left\{\begin{matrix}y=\frac{-28}{7}=-4 \\x=\frac{-35}{-7}=5\end{matrix}\right.\\ \qquad V=\{(5,-4)\}\)
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