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Substitutie of combinatie

1. \(\left\{\begin{matrix}2y=\frac{-66}{5}+6x\\x+3y=\frac{-39}{5}\end{matrix}\right.\)
2. \(\left\{\begin{matrix}4x-4y=\frac{29}{2}\\4x=y+\frac{5}{2}\end{matrix}\right.\)
3. \(\left\{\begin{matrix}4x+2y=\frac{-168}{5}\\2x=y+\frac{86}{5}\end{matrix}\right.\)
4. \(\left\{\begin{matrix}-2y=\frac{-47}{40}+3x\\x+3y=\frac{-87}{40}\end{matrix}\right.\)
5. \(\left\{\begin{matrix}-4x-4y=-20\\-x+2y=8\end{matrix}\right.\)
6. \(\left\{\begin{matrix}3x-y=\frac{27}{5}\\3x=3y+\frac{21}{5}\end{matrix}\right.\)
7. \(\left\{\begin{matrix}y=\frac{-69}{10}-4x\\3x+6y=\frac{-99}{10}\end{matrix}\right.\)
8. \(\left\{\begin{matrix}3x+4y=\frac{-764}{33}\\x=-3y+\frac{-201}{11}\end{matrix}\right.\)
9. \(\left\{\begin{matrix}-6x+3y=\frac{7}{3}\\-x=-y+\frac{-2}{9}\end{matrix}\right.\)
10. \(\left\{\begin{matrix}-3y=\frac{-145}{68}+x\\-5x-6y=\frac{-545}{68}\end{matrix}\right.\)
11. \(\left\{\begin{matrix}-4y=-1-6x\\-2x-y=-2\end{matrix}\right.\)
12. \(\left\{\begin{matrix}5x-4y=\frac{-103}{20}\\4x-y=\frac{-67}{20}\end{matrix}\right.\)

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Substitutie of combinatie

Verbetersleutel

1. \(\left\{\begin{matrix}2y=\frac{-66}{5}+6x\\x+3y=\frac{-39}{5}\end{matrix}\right.\qquad V=\{(\frac{6}{5},-3)\}\)
2. \(\left\{\begin{matrix}4x-4y=\frac{29}{2}\\4x=y+\frac{5}{2}\end{matrix}\right.\qquad V=\{(\frac{-3}{8},-4)\}\)
3. \(\left\{\begin{matrix}4x+2y=\frac{-168}{5}\\2x=y+\frac{86}{5}\end{matrix}\right.\qquad V=\{(\frac{1}{10},-17)\}\)
4. \(\left\{\begin{matrix}-2y=\frac{-47}{40}+3x\\x+3y=\frac{-87}{40}\end{matrix}\right.\qquad V=\{(\frac{9}{8},\frac{-11}{10})\}\)
5. \(\left\{\begin{matrix}-4x-4y=-20\\-x+2y=8\end{matrix}\right.\qquad V=\{(\frac{2}{3},\frac{13}{3})\}\)
6. \(\left\{\begin{matrix}3x-y=\frac{27}{5}\\3x=3y+\frac{21}{5}\end{matrix}\right.\qquad V=\{(2,\frac{3}{5})\}\)
7. \(\left\{\begin{matrix}y=\frac{-69}{10}-4x\\3x+6y=\frac{-99}{10}\end{matrix}\right.\qquad V=\{(\frac{-3}{2},\frac{-9}{10})\}\)
8. \(\left\{\begin{matrix}3x+4y=\frac{-764}{33}\\x=-3y+\frac{-201}{11}\end{matrix}\right.\qquad V=\{(\frac{8}{11},\frac{-19}{3})\}\)
9. \(\left\{\begin{matrix}-6x+3y=\frac{7}{3}\\-x=-y+\frac{-2}{9}\end{matrix}\right.\qquad V=\{(-1,\frac{-11}{9})\}\)
10. \(\left\{\begin{matrix}-3y=\frac{-145}{68}+x\\-5x-6y=\frac{-545}{68}\end{matrix}\right.\qquad V=\{(\frac{5}{4},\frac{5}{17})\}\)
11. \(\left\{\begin{matrix}-4y=-1-6x\\-2x-y=-2\end{matrix}\right.\qquad V=\{(\frac{1}{2},1)\}\)
12. \(\left\{\begin{matrix}5x-4y=\frac{-103}{20}\\4x-y=\frac{-67}{20}\end{matrix}\right.\qquad V=\{(\frac{-3}{4},\frac{7}{20})\}\)