Question

1. show an example of the substitution property of equality.

Explanation:

The substitution property of equality states that if two quantities are equal, one can replace the other in any expression. First, define equal values, then substitute one into an expression involving the other.

Answer:

Example:

1. Let $x = 5$ and $y = x$
2. Substitute $x$ with 5 in the expression $2y + 3$:

$2(5) + 3 = 13$

This shows since $x=y$, we can substitute $x$ for $y$ (or vice versa) in any mathematical statement without changing its validity.