Good evening. The first statement can be written mathematically this way: y=4x-6
The second part can be written as x+y=14
If you substitute the first for the second (the 4x-4 for the y in the second equation), you get
x + (4x-6) = 14 and you can simplify
5x -6 = 14
Add 6 to both sides to maintain the equality
5x=20
Divide by 5
x=4
Now plug 4 into one of the initial equations:
4 + y = 14 and solve
Subtract 4 from both sides and you get
y = 10
So the numbers are 4 and 10
Hope this helps
Mike