(39.5. а) $$ \left\{\begin{array}{l}x-3 y=5, \ 3 x+2 y=4 ;\end{array} ight. $$ б) $$ \left\{\begin{array}{l}3 x+y=1, \ 2 x-5 y=-22\end{array} ight. $$ ०39.6. а) $$ \left\{\begin{array}{l}x+y=4 \ 4 x-5 y=7\end{array} ight. $$ б) $$ \left\{\begin{array}{l}x-y=6, \ 5 x-2 y=-3\end{array} ight. $$ ०39.7. а) $$ \left\{\begin{array}{l}40 x+3 y=-10 \ 20 x-7 y=-5\end{array} ight. $$ б) $$ \left\{\begin{array}{l}5 x+2 y=1, \ 15 x+3 y=3\end{array} ight. $$ о39.8. а) $$ \left\{\begin{array}{l}3 x+7 y=46 \ 4 x-3 y=12\end{array} ight. $$ б) $$ \left\{\begin{array}{l}-3 x+4 y=24 \ 5 x+3 y=-40\end{array} ight. $$

Question

(39.5. а) $$ \left\{\begin{array}{l}x-3 y=5, \ 3 x+2 y=4 ;\end{array}ight. $$ б) $$ \left\{\begin{array}{l}3 x+y=1, \ 2 x-5 y=-22\end{array}ight. $$ ०39.6. а) $$ \left\{\begin{array}{l}x+y=4 \ 4 x-5 y=7\end{array}ight. $$ б) $$ \left\{\begin{array}{l}x-y=6, \ 5 x-2 y=-3\end{array}ight. $$ ०39.7. а) $$ \left\{\begin{array}{l}40 x+3 y=-10 \ 20 x-7 y=-5\end{array}ight. $$ б) $$ \left\{\begin{array}{l}5 x+2 y=1, \ 15 x+3 y=3\end{array}ight. $$ о39.8. а) $$ \left\{\begin{array}{l}3 x+7 y=46 \ 4 x-3 y=12\end{array}ight. $$ б) $$ \left\{\begin{array}{l}-3 x+4 y=24 \ 5 x+3 y=-40\end{array}ight. $$

Kirk Nichols · Accepted Answer

а) $$x = 2, y = -1$$ б) $$x = -1, y = 4$$ а) $$x = 3, y = 1$$ б) $$x = -5, y = -11$$ а) $$x = -\frac{1}{4}, y = 0$$ б) $$x = \frac{1}{5}, y = 0$$ а) $$x = 6, y = 4$$ б) $$x = -8, y = 0$$

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