Answer:
[tex]\frac{1}{2}(a-1)[/tex]
Step-by-step explanation:
We have to factor out a coefficient that is common to both the terms.
Looking at the problem:
[tex]\frac{1}{2}a-\frac{1}{2}[/tex]
We can see that we can take out [tex]\frac{1}{2}[/tex] from both the terms. Taking out, or taking common means to divide:
[tex]\frac{\frac{1}{2}a}{\frac{1}{2}}=a[/tex]
and
[tex]\frac{\frac{1}{2}}{\frac{1}{2}}=1[/tex]
Thus, we have:
[tex]\frac{1}{2}a-\frac{1}{2}\\=\frac{1}{2}(a-1)[/tex]
This is the simplified form.
