Diskon

(A)   Besar diskon

\begin{equation*}
\begin{split}
{\color {blue} \text{Diskon}} & = {\color {blue} \text{Harga Kotor} - \text{Harga Bersih}} \\\\
\text{Diskon} & = 500.000 - 350.000 \\\\
\text{Diskon} & = 150.000
\end{split}
\end{equation*}

(B)   % diskon 

\begin{equation*}
\begin{split}
{\color {blue} \% \text{ Diskon}} & = {\color {blue} \frac {\text{Diskon}}{\text{Harga Kotor}} \times 100 \%} \\\\
\% \text{ Diskon} & = \frac {150.000}{500.000} \times 100 \% \\\\
\% \text{ Diskon} & = \frac {\cancelto {3}{150.000}}{\cancelto {10}{500.000}} \times 100 \% \\\\
\% \text{ Diskon} & = \frac {3}{10} \times 100 \% \\\\
\% \text{ Diskon} & = \frac {3}{\cancelto {1}{10}} \times \cancelto {10}{100} \% \\\\
\% \text{ Diskon} & = 30 \%
\end{split}
\end{equation*}