Question

Реши систему: {x=7
11x−y=11

Answer 1

Объяснение:

Решение на фото........

Answer 2

$\left \{ \begin{array}{l} x=7 \\ 11x-y=11 \end{array} \right. \Rightarrow \; \left \{ \begin{array}{l} x=7 \\ 11*7-y=11 \end{array} \right. \Rightarrow \; \left \{ \begin{array}{l} x=7 \\ 77-y=11 \end{array} \right. \Rightarrow \; \left \{ \begin{array}{l} x=7 \\ y=66 \end{array} \right.$