Question

{ х+2у=16. {2x-5y = 5

Answer 1

$\begin{cases}x+2y=16\\ 2x-5y=5\end{cases}\Leftrightarrow \begin{cases}2x+4y=32\\ 2x-5y=5\end{cases}\Rightarrow 9y=27\Rightarrow y=3\Rightarrow x=10$