Trong các khẳng định sau khẳng định nào đúng?

\(\dfrac{{2 - 40}}{2} = \dfrac{{ - 38}}{2}\)

\(\dfrac{{16 - 5}}{2} = \dfrac{{11}}{2}\)

\(\dfrac{{16 - 40}}{{16}} =  - 40\)

\(\dfrac{{8.(2 - 5)}}{{16}} = \dfrac{{ - 3}}{2}\)

Đoạn thẳng \(OA\)

Đoạn thẳng \(OB\)

Đoạn thẳng \(AB\)

Đường thẳng \(AB\)

\(\dfrac{3}{2}\)

\(\dfrac{{ - 3}}{2}\)

\(\dfrac{{ - 2}}{3}\)   

\(\dfrac{1}{3}\)

\(3\)

\(2\)

\(0\)

\(1\)

\(10\)

\(0\)

\(\dfrac{{ - 1}}{{10}}\)        

\(\dfrac{1}{{10}}\)

\(\dfrac{1}{{27}} - \dfrac{1}{9} = \dfrac{0}{{18}}\) 

\(\dfrac{1}{{27}} - \dfrac{3}{{27}} = \dfrac{{1 - 3}}{{27}} = \dfrac{{ - 2}}{{27}}\)

\(\dfrac{1}{{27}} - \dfrac{3}{{27}} = \dfrac{2}{{27}}\)

\(\dfrac{1}{{27}} - \dfrac{3}{{27}} = \dfrac{{ - 2}}{0}\)