$
\newcommand\tg{\operatorname{tg}}
\newcommand\cotg{\operatorname{cotg}}
\newcommand{\uhel}{{<}\kern-0.5em)\,}
\newcommand\abs[1]{\left| #1 \right|}
\newcommand\zav[1]{\left( #1 \right)}
\newcommand\zavhra[1]{\left[ #1 \right]}
\newcommand\zavslo[1]{\left\{ #1 \right\}}
\newcommand\zavlom[1]{\left< #1 \, \right>}
\newcommand{\podtrzeni}[1]{\underline{ #1 }}
\newcommand{\vysledek}[1]{\underline{\underline{#1}}}
\newcommand{\priume}[4]{
\Bigg\uparrow
\underline{
\begin{array}{rp{2.3cm}r}
#1 & \dots\dots\dots\dots\dots & #2 \\
#3 & \dots\dots\dots\dots\dots & #4
\end{array}}
\Bigg\uparrow}
\newcommand{\nepriume}[4]{
\Bigg\downarrow
\underline{
\begin{array}{rp{2.3cm}r}
#1 & \dots\dots\dots\dots\dots & #2 \\
#3 & \dots\dots\dots\dots\dots & #4
\end{array}}
\Bigg\uparrow}
\newcommand{\nepriumevpravo}[4]{
\Bigg\uparrow
\underline{
\begin{array}{rp{2.3cm}r}
#1 & \dots\dots\dots\dots\dots & #2 \\
#3 & \dots\dots\dots\dots\dots & #4
\end{array}}
\Bigg\downarrow}
$
$ \textbf{Běloun 1.1 a) / str. 7} $
Štítky: výpočty
$ \textbf{Vypočítejte} $
$$ 23-[2,6+(6-3^2)-4,52] $$
$ \textbf{Řešení} $
\begin{align*}
&23-[2,6+(6-3^2)-4,52]=\\
=\ &23-[2,6+(6-9)-4,52]=\\
=\ &23-[2,6+(-3)-4,52]=\\
=\ &23-[-0,4-4,52]=\\
=\ &23-(-4,92)=\\
=\ &23+4,92=\\
=\ &\vysledek{27,92}
\end{align*}
$ \textbf{Výsledek} $
$$ \vysledek{27,92} $$
$ \textbf{Konec příkladu} $