x = 8

A Transitive Property
B Multiplication Property
C Addition Property
D Simplify
E Angle Addition Postulate
F Substitution
GSubtraction Property
H Divison Property
I Segment Addition Postulate

F Substitution

The step-by-step process for solving the equation x = 8 can be described as follows:

1. Start with the given equation x = 8.
2. To simplify the equation, we can use the simplification property (D), which states that any term can be reduced to its simplest form. Since both sides of the equation are already in their simplest form, no further simplification is needed.
3. To solve for x, we can use the substitution property (F), which allows us to replace the variable (x) with its given value (8). Thus, we substitute x with 8:
x = 8
4. Now, the equation becomes 8 = 8.
5. To further simplify the equation, we can use the reflexive property, which states that any value is equal to itself. In this case, 8 is equal to 8, so the equation is still true.
6. Therefore, the solution to the equation x = 8 is x = 8.

It seems like you have provided a statement or equation, but you haven't clarified what you would like to do with it. In order to determine which property or postulate is applicable in this context, could you please provide more information or specify what you are trying to achieve?