Question attached.
Frankly this is tiresome. It is
$\displaystyle
F_X (x) = \left\{ {\begin{array}{lc}
{0,} & {x < 0} \\ \\
{\frac{1}
{{27}},} & {0 \leqslant x < 1} \\ \\
{\frac{7}{{27}}} & {1 \leqslant x < 2} \\ \\
{\frac{19}{{27}}} & {2 \leqslant x < 3} \\ \\
1 & {3 \leqslant x} \\
\end{array} } \right.$
I am done with the thread.