List the elements of the set in roster notation. (Enter O for the empty set.)
{x | 7 - x = 6 and x is an integer}
To list the elements of the set in roster notation, we need to find the values of x that satisfy the given condition. Let's solve the equation 7 - x = 6 to find these values.
Subtracting 7 from both sides of the equation, we get:
-x = -1
Dividing both sides by -1, we have:
x = 1
Therefore, the only value of x that satisfies the equation and is an integer is 1. Hence, the set in roster notation is {1}.