Задание
Составьте систему линейных уравнений с переменными \(\displaystyle x\) и \(\displaystyle y{\small,}\) решением которой служит пара \(\displaystyle x=-13{\small,}\) \(\displaystyle y=-11{\small.}\)
\(\displaystyle \begin{aligned}\begin{cases}\\\\\\\end{cases}\\\end{aligned} \) | \(\displaystyle -7x+\)[ ]\(\displaystyle y=\)[ ]\(\displaystyle {\small,}\) [ ]\(\displaystyle x-7y=\)[ ]\(\displaystyle {\small.}\) |