Răspuns: [tex]\red{\underline{~\bf x=6,634~}}[/tex]
Explicație pas cu pas:
[tex]\bf (x:0,31)+1,1= 22,5[/tex]
[tex]\bf x:0,31=22,5-1,1[/tex]
[tex]\bf x:0,31=21,4~~\bigg|\cdot0,31[/tex]
[tex]\red{\underline{~\bf x=6,634~}}[/tex]