Răspuns:
Explicație pas cu pas:
[tex]\begin{equation} \left.\begin{aligned} \underline{|~~|}~~~~~~~\\ \underline{|~~|}+1~~ \\\underline{|~~|}+2~~\\ \underline{|~~|}+3~~\\ \underline{|~~|}+4~~\\ \underline{|~~|}+5~~\end{aligned} \right\} ~873[/tex]
[tex]873-(1+2+3+4+5)=\\ 873-15=858[/tex]
[tex]858:6=143[/tex]
[tex]143, 144, 145, 146, 147, 148[/tex]