Evaluate Using the Given Value 1/2b if b=12

$\frac{1}{2} b$ if $b = 12$

Replace the variable $b$ with $12$ in the expression.

$\frac{1}{2} \cdot (12)$

Cancel the common factor of $2$ .

Factor $2$ out of $12$ .

$\frac{1}{2} \cdot (2 (6))$

Cancel the common factor.

$\frac{1}{2} \cdot (2 \cdot 6)$

Rewrite the expression.

$6$