Answer :
[tex]x=4y+6\\
x-3y=4\\\\
4y+6-3y=4\\
y=-2\\\\
x=4\cdot(-2)+6\\
x=-8+6\\
x=-2\\\\
\boxed{(x,y)=(-2,-2)}
[/tex]
Answer in addition..
[tex]\framebox[1.1\width]{Godspeed!} \par [/tex]
[tex]\framebox[1.1\width]{Godspeed!} \par [/tex]