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Substitutie of combinatie

1. \(\left\{\begin{matrix}-2x-y=\frac{251}{70}\\3x+4y=\frac{-257}{35}\end{matrix}\right.\)
2. \(\left\{\begin{matrix}y=-1-x\\-5x-4y=\frac{25}{7}\end{matrix}\right.\)
3. \(\left\{\begin{matrix}3x+2y=\frac{39}{14}\\-x=-6y+\frac{281}{42}\end{matrix}\right.\)
4. \(\left\{\begin{matrix}-2x+y=\frac{-68}{57}\\-6x=-3y+\frac{-68}{19}\end{matrix}\right.\)
5. \(\left\{\begin{matrix}5x-6y=\frac{-2425}{119}\\-x+6y=\frac{2117}{119}\end{matrix}\right.\)
6. \(\left\{\begin{matrix}x-y=\frac{-17}{10}\\5x-6y=-10\end{matrix}\right.\)
7. \(\left\{\begin{matrix}6x+5y=\frac{-59}{6}\\3x=-y+\frac{-307}{60}\end{matrix}\right.\)
8. \(\left\{\begin{matrix}3y=\frac{1}{8}+6x\\-x-2y=\frac{-41}{12}\end{matrix}\right.\)
9. \(\left\{\begin{matrix}-3y=\frac{25}{4}+x\\-2x+4y=\frac{-15}{2}\end{matrix}\right.\)
10. \(\left\{\begin{matrix}-x+4y=\frac{268}{21}\\2x+2y=\frac{64}{21}\end{matrix}\right.\)
11. \(\left\{\begin{matrix}-5y=\frac{97}{15}+2x\\x+2y=\frac{-7}{3}\end{matrix}\right.\)
12. \(\left\{\begin{matrix}3x-2y=\frac{-68}{13}\\-x+y=\frac{76}{39}\end{matrix}\right.\)

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Substitutie of combinatie

Verbetersleutel

1. \(\left\{\begin{matrix}-2x-y=\frac{251}{70}\\3x+4y=\frac{-257}{35}\end{matrix}\right.\qquad V=\{(\frac{-7}{5},\frac{-11}{14})\}\)
2. \(\left\{\begin{matrix}y=-1-x\\-5x-4y=\frac{25}{7}\end{matrix}\right.\qquad V=\{(\frac{3}{7},\frac{-10}{7})\}\)
3. \(\left\{\begin{matrix}3x+2y=\frac{39}{14}\\-x=-6y+\frac{281}{42}\end{matrix}\right.\qquad V=\{(\frac{1}{6},\frac{8}{7})\}\)
4. \(\left\{\begin{matrix}-2x+y=\frac{-68}{57}\\-6x=-3y+\frac{-68}{19}\end{matrix}\right.\qquad V=\{(\frac{5}{6},\frac{9}{19})\}\)
5. \(\left\{\begin{matrix}5x-6y=\frac{-2425}{119}\\-x+6y=\frac{2117}{119}\end{matrix}\right.\qquad V=\{(\frac{-11}{17},\frac{20}{7})\}\)
6. \(\left\{\begin{matrix}x-y=\frac{-17}{10}\\5x-6y=-10\end{matrix}\right.\qquad V=\{(\frac{-1}{5},\frac{3}{2})\}\)
7. \(\left\{\begin{matrix}6x+5y=\frac{-59}{6}\\3x=-y+\frac{-307}{60}\end{matrix}\right.\qquad V=\{(\frac{-7}{4},\frac{2}{15})\}\)
8. \(\left\{\begin{matrix}3y=\frac{1}{8}+6x\\-x-2y=\frac{-41}{12}\end{matrix}\right.\qquad V=\{(\frac{2}{3},\frac{11}{8})\}\)
9. \(\left\{\begin{matrix}-3y=\frac{25}{4}+x\\-2x+4y=\frac{-15}{2}\end{matrix}\right.\qquad V=\{(\frac{-1}{4},-2)\}\)
10. \(\left\{\begin{matrix}-x+4y=\frac{268}{21}\\2x+2y=\frac{64}{21}\end{matrix}\right.\qquad V=\{(\frac{-4}{3},\frac{20}{7})\}\)
11. \(\left\{\begin{matrix}-5y=\frac{97}{15}+2x\\x+2y=\frac{-7}{3}\end{matrix}\right.\qquad V=\{(\frac{19}{15},\frac{-9}{5})\}\)
12. \(\left\{\begin{matrix}3x-2y=\frac{-68}{13}\\-x+y=\frac{76}{39}\end{matrix}\right.\qquad V=\{(\frac{-4}{3},\frac{8}{13})\}\)