Answer:
x=-5, y=-3
Step-by-step explanation:
Given the system of two equations
[tex]\left\{\begin{array}{l}x-2y=1\\y=x+2\end{array}\right..[/tex]
Substitute the second equation into the first one:
[tex]x-2(x+2)=1,\\ \\x-2x-4=1,\\ \\x-2x=1+4,\\ \\-x=5,\\ \\x=-5.[/tex]
Then
[tex]y=-5+2=-3.[/tex]
