Answer
$\{(4,3)\}$
Work Step by Step
1. Multiply 2 to the first equation to get $6x-2y=18$
2. Use elimination, add the above result to the second equation and get $7x=28$, thus $x=4$
3. Use the first equation, we have $3(4)-y=9$, thus $y=3$
4. Thus the solution set is $\{(4,3)\}$
