What adds to 6 and multiplies to 18

I'm confused. I assumed you meant two numbers that add together to equal 6, and multiply to equal 18. So, the multiples of 18 are 1 & 18, 2 & 9, 3 & 6. But, none of these add to equal 6. Could you clarify what you want?

That has to be impossible because you can’t get any solution that would possible add to 6