Розв'язати систему методом додавання.. Created by ruslanalimov2020. algebra-ru

Розв'язати систему методом додавання....

Ningguang

Ответ:

$\left\{\begin{array}{l}3x-4y=18\\5x+2y=4\ |\cdot 2\end{array}\right\ \ \left\{\begin{array}{l}3x-4y=18\\10x+4y=8\end{array}\right\ \oplus \ \left\{\begin{array}{l}13x=26\\2y=4-5x\end{array}\right\ \ \left\{\begin{array}{l}x=2\\2y=-6\end{array}\right\\\\\\\left\{\begin{array}{l}x=2\\y=-3\end{array}\right\ \ \ \ Otvet:\ (\ 2\ ;-3\ )\ .$

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Answers & Comments

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