#### Answer

{(3,7)}

#### Work Step by Step

y-7=0
y-7+7=0+7
y=7
There is no x in this equation therefore the solution must have y equal to 7. Plug this value for y into the other equation to find x.
7x-3y=0
7x-3(7)=0
7x-21=0
7x-21+21=0+21
7x=21
x=$\frac{21}{7}$
x=3
Therefore the solution is {(3,7)}