determine the solution that satisfies both of these equations.

To determine the satisfactory solution, we can simply substitute the given values into the equations.
Given we already have the value of y, we can plug it into the top equation:
x + y = 14 ⇒ x + (x + 6) = 14 ⇒ 2x + 6 = 14
From here, we can subtract 6 from both sides:
2x + 6 = 14 ⇒ 2x = 8
Finally, we divide both sides by the coefficient (2) to find the value of x:
8 ÷ 2 = 4
x = 4
Now that we have the value of x, we can plug it back into the second equation:
y = x + 6 ⇒ y = 4 + 6
Therefore, y = 10.
The satisfactory solution for both of these equations would be: x = 4, y = 10.