Question

which expression represents tianas number?\\(\frac{1}{2}(n - 5)\\)\
what is tianas final number if her starting number is 23?\
tianas final number is \\(\square\\).

Explanation:

Step1: Substitute n=23 into expression

$\frac{1}{2}(23 - 5)$

Step2: Calculate inside parentheses

$23 - 5 = 18$

Step3: Multiply by 1/2

$\frac{1}{2} \times 18 = 9$

Answer:

9