To evaluate the expression [tex]\(\frac{a}{8} - b\)[/tex] for [tex]\(a = 168\)[/tex] and [tex]\(b = 4\)[/tex], follow these steps:
1. Substitute the given values into the expression:
[tex]\(\frac{168}{8} - 4\)[/tex]
2. Perform the division first, as per the order of operations (PEMDAS/BODMAS):
[tex]\(\frac{168}{8}\)[/tex]
Divide 168 by 8:
[tex]\[
\frac{168}{8} = 21
\][/tex]
3. Subtract [tex]\(b\)[/tex] from the result obtained:
[tex]\[
21 - 4
\][/tex]
4. Perform the subtraction:
[tex]\[
21 - 4 = 17
\][/tex]
Therefore, the result of the expression [tex]\(\frac{168}{8} - 4\)[/tex] is [tex]\(\boxed{17.0}\)[/tex].
