Question

Методом сложение X-2y=5 3x+8y=1

Answer 1

$\left\{\begin{array}{l}x-2y=5\, |\cdot (-3)\\3x+8y=1\end{array}\right\ \oplus \ \left\{\begin{array}{l}x-2y=5\\14y=-14\end{array}\right\ \ \left\{\begin{array}{l}x=2y+5\\y=-1\end{array}\right\ \ \left\{\begin{array}{l}x=3\\y=-1\end{array}\right\\\\\\Otvet:\ \ \ (\ 3\, ;\, 1\, )\ .$