An ordered pair that makes this true is one where you substitute (x,y) into your equation and it works.
(3,6)
6(3) + 3(6) = 15
18 + 18 = 15
36 = 15
21 = 0
Well, that's not true, so (3,6) is not s solution to your equation.
If it's asking you just to find any ordered pair, choose a value for x or y and solve for the other. What if x = 7?
6(7) + 3y = 15
42 + 3y = 15
3y = - 27
y = -9
So, (7,-9) is s sution to your equation.
Hope this helps!
