Answer:
[tex]x=5.25,y=2.25[/tex]
Step-by-step explanation:
We can add the two equations to eliminate the variable [tex]y[/tex] and solve for [tex]x[/tex]:
[tex]3x-3y+x+3y=9+12[/tex]
[tex]4x=21[/tex]
[tex]x=5.25[/tex]
Now, we can use substitution to solve for [tex]y[/tex]:
[tex]x+3y=12[/tex] (given)
[tex]5.25+3y=12[/tex]
[tex]3y=12-5.25[/tex]
[tex]=6.75[/tex]
[tex]y=2.25[/tex]
Hope this helps :)
