Y=3/5
First, set it up so they cancel. I recommend multiplying the second equation by 2, getting
[tex]4x-10y=-3[/tex]
[tex]24x+10y=24[/tex]
add them together, and you get
[tex]28x=21[/tex]
so
[tex]x=3/4[/tex]
then, you plug x into one of the equations (first because it's easier) and get
[tex]3-10y=-3[/tex]
so
[tex]-10y=-6[/tex]
and
[tex]y=3/5[/tex]