We have the following substraction:
[tex]\frac{5}{6}-\frac{1}{2}[/tex]
This fraction is equivalent to
[tex]\frac{5}{6}-\frac{1}{2}=\frac{5\cdot2-6\cdot1}{6\cdot2}[/tex]
Then, we have
[tex]\begin{gathered} \frac{5}{6}-\frac{1}{2}=\frac{10-6}{12} \\ \frac{5}{6}-\frac{1}{2}=\frac{4}{12} \\ \frac{5}{6}-\frac{1}{2}=\frac{1}{3} \end{gathered}[/tex]
So, the answer is 1/3
In the first part, we used the butterfly method:
