let's say he had "x" to start with.
how much is 1/5 of x? well is just (1/5)x or just x/5.
how much is 2/3 of x? well, is just (2/3)x or 2x/3.
we know those sum will add up to "x", let's check then.
[tex]\bf \stackrel{shirt}{\cfrac{x}{5}}+\stackrel{watch}{24}+\stackrel{leftover}{\cfrac{2x}{3}}=x\impliedby
\begin{array}{llll}
\textit{multiplying all by the \underline{LCD of 15}}\\\\
\textit{to get rid of the denominators}
\end{array}
\\\\\\
\boxed{15}\cdot \cfrac{x}{5}+\boxed{15}\cdot 24+\boxed{15}\cdot \cfrac{2x}{3}=\boxed{15}\cdot x\implies 3x+360+10x=15x
\\\\\\
13x+360=15x\implies 360=15x-13x\implies 360=2x
\\\\\\
\cfrac{360}{2}=x
\implies
180=x[/tex]
