I would like to modify my script, in order to obtain a similar result like the one posted in the picture.
\documentclass[a4paper,12pt]{article}[12pt]
\usepackage[italian]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{anysize}
\usepackage{graphicx}
\usepackage{float}
\usepackage{etoolbox}
\usepackage{amsbsy}
\usepackage{amsmath}
\usepackage{pbox}
\usepackage{fancyhdr}
\usepackage{cancel}
\usepackage{tabularx}
\usepackage{booktabs}
\usepackage{multirow}
\usepackage{longtable}
\usepackage{natbib}
\usepackage{tikz}
\usepackage{subfig}
\usepackage{xcolor}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{mathrsfs}
\usepackage{textcomp}
\linespread{1.4}
\frenchspacing
\newcommand{\abs}[1]{\lvert#1\rvert}
\usepackage{floatflt,epsfig}
\usepackage{multicol}
\usepackage[a4paper,top=1.0cm,bottom=1.0cm,left=1.0cm,right=1.0cm]{geometry}
\renewcommand{\rmdefault}{phv}
%\usepackage{mathpple}
%\usepackage{palatino}
\usepackage{lxfonts}
%
% \usepackage{multicol}
\usepackage{pifont}
\usepackage{lipsum}
\usepackage{tikz}
\usepackage{bbding}
\newcommand{\cuthere}{%
\noindent
\raisebox{-2.8pt}[0pt][0.75\baselineskip]{\small\ding{34}}
\unskip{\tiny\dotfill}
}
\newcommand\yellowbigsqcup[1][\displaystyle]{%
\fboxrule0pt
\ifx#1\textstyle\fboxsep-0.6pt\else\fboxsep-1.25pt\fi
\mathrel{\fcolorbox{white}{yellow}{$#1\bigsqcup$}}}
\newcommand{\makenonemptybox}[2]{%
\par\nobreak\vspace{\ht\strutbox}\noindent
\fbox{%
\parbox[c][\dimexpr#1-2\fboxsep][t]{\dimexpr\linewidth-2\fboxsep}{
\hrule width \hsize height 0pt
#2
}%
}%
\par\vspace{\ht\strutbox}
}
\begin{document}
\begin{enumerate}
\begin{minipage}{.4\linewidth}
\item $ \dfrac{17}{\colorbox{yellow}{5}}+\dfrac{13}{\colorbox{orange}{6}}-\dfrac{11}{\colorbox{pink}{30}} = \\
\\ \\ \\=\dfrac{17 \cdot 6 +13 \cdot 5 -11 \cdot 1}{\colorbox{green}{30}} \\
\\ \\ \\=\dfrac{\text{\dots\dots} +\text{\dots\dots}- \text{\dots\dots}}{\colorbox{green}{30}}
\\ \\ \\ = \dfrac{\text{\dots\dots}}{30} = \dfrac{\text{\dots\dots}}{\text{\dots\dots}} \\ $
\end{minipage}%
\begin{minipage}{.5\linewidth}
$ \text{m.c.m.}\left(5,6,30\right) =\colorbox{green}{30} \\
$\[\begin{pmatrix}
%prima riga
\colorbox{green}{30}:\textbf{\colorbox{yellow}{5}}=\colorbox{yellow}{\text{6};}
& \colorbox{green}{30}:\textbf{\colorbox{orange}{6}}=\colorbox{orange}{5};
& \colorbox{green}{30}:\textbf{\colorbox{pink}{30}}=\textbf{\colorbox{pink}{1}}; \\
%%seconda riga
%15 \cdot 1 = 15
%& \text{\dots}\cdot 2 = \text{\dots}
%& \text{\dots}\cdot \text{\dots} = \text{\dots}
\end{pmatrix}\]$
$
\end{minipage}
\end{enumerate}
\end{document}
