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Substitutie of combinatie

1. \(\left\{\begin{matrix}-4x+y=\frac{-7}{2}\\-2x=-5y+-4\end{matrix}\right.\)
2. \(\left\{\begin{matrix}6y=\frac{-402}{85}-x\\-4x+4y=\frac{208}{85}\end{matrix}\right.\)
3. \(\left\{\begin{matrix}4y=\frac{-11}{26}-2x\\-x+y=\frac{217}{104}\end{matrix}\right.\)
4. \(\left\{\begin{matrix}-4y=\frac{27}{11}+5x\\x-y=\frac{9}{55}\end{matrix}\right.\)
5. \(\left\{\begin{matrix}-6x+6y=\frac{-73}{2}\\-x+6y=\frac{-131}{4}\end{matrix}\right.\)
6. \(\left\{\begin{matrix}-y=\frac{-71}{9}-5x\\-3x-5y=\frac{-19}{9}\end{matrix}\right.\)
7. \(\left\{\begin{matrix}-2x-5y=-1\\-5x=-y+\frac{82}{5}\end{matrix}\right.\)
8. \(\left\{\begin{matrix}-4x-y=\frac{-74}{5}\\-5x-4y=-24\end{matrix}\right.\)
9. \(\left\{\begin{matrix}-4y=\frac{91}{18}-4x\\-x+2y=\frac{-83}{72}\end{matrix}\right.\)
10. \(\left\{\begin{matrix}-2x-4y=\frac{-122}{9}\\6x-y=\frac{-1}{2}\end{matrix}\right.\)
11. \(\left\{\begin{matrix}-5x-6y=\frac{15}{4}\\-5x=-y+\frac{95}{16}\end{matrix}\right.\)
12. \(\left\{\begin{matrix}-3x+2y=\frac{-5}{7}\\x=y+\frac{1}{14}\end{matrix}\right.\)

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Substitutie of combinatie

Verbetersleutel

1. \(\left\{\begin{matrix}-4x+y=\frac{-7}{2}\\-2x=-5y+-4\end{matrix}\right.\qquad V=\{(\frac{3}{4},\frac{-1}{2})\}\)
2. \(\left\{\begin{matrix}6y=\frac{-402}{85}-x\\-4x+4y=\frac{208}{85}\end{matrix}\right.\qquad V=\{(\frac{-6}{5},\frac{-10}{17})\}\)
3. \(\left\{\begin{matrix}4y=\frac{-11}{26}-2x\\-x+y=\frac{217}{104}\end{matrix}\right.\qquad V=\{(\frac{-19}{13},\frac{5}{8})\}\)
4. \(\left\{\begin{matrix}-4y=\frac{27}{11}+5x\\x-y=\frac{9}{55}\end{matrix}\right.\qquad V=\{(\frac{-1}{5},\frac{-4}{11})\}\)
5. \(\left\{\begin{matrix}-6x+6y=\frac{-73}{2}\\-x+6y=\frac{-131}{4}\end{matrix}\right.\qquad V=\{(\frac{3}{4},\frac{-16}{3})\}\)
6. \(\left\{\begin{matrix}-y=\frac{-71}{9}-5x\\-3x-5y=\frac{-19}{9}\end{matrix}\right.\qquad V=\{(\frac{-4}{3},\frac{11}{9})\}\)
7. \(\left\{\begin{matrix}-2x-5y=-1\\-5x=-y+\frac{82}{5}\end{matrix}\right.\qquad V=\{(-3,\frac{7}{5})\}\)
8. \(\left\{\begin{matrix}-4x-y=\frac{-74}{5}\\-5x-4y=-24\end{matrix}\right.\qquad V=\{(\frac{16}{5},2)\}\)
9. \(\left\{\begin{matrix}-4y=\frac{91}{18}-4x\\-x+2y=\frac{-83}{72}\end{matrix}\right.\qquad V=\{(\frac{11}{8},\frac{1}{9})\}\)
10. \(\left\{\begin{matrix}-2x-4y=\frac{-122}{9}\\6x-y=\frac{-1}{2}\end{matrix}\right.\qquad V=\{(\frac{4}{9},\frac{19}{6})\}\)
11. \(\left\{\begin{matrix}-5x-6y=\frac{15}{4}\\-5x=-y+\frac{95}{16}\end{matrix}\right.\qquad V=\{(\frac{-9}{8},\frac{5}{16})\}\)
12. \(\left\{\begin{matrix}-3x+2y=\frac{-5}{7}\\x=y+\frac{1}{14}\end{matrix}\right.\qquad V=\{(\frac{4}{7},\frac{1}{2})\}\)