Răspuns: [tex]\red{\bf~ n=2~}[/tex]
[tex]\bf 27 - (n\cdot 24+1): 7 = 20[/tex]
[tex]\bf 27 =20+ (n\cdot 24+1): 7[/tex]
[tex]\bf 27 -20= (n\cdot 24+1): 7[/tex]
[tex]\bf 7= (n\cdot 24+1): 7~~~\bigg|\cdot 7[/tex]
[tex]\bf 49= n\cdot 24+1[/tex]
[tex]\bf 49-1= n\cdot 24[/tex]
[tex]\bf 48= n\cdot 24~~~~\bigg|:24[/tex]
[tex]\bf 2= n[/tex]
[tex]\red{\underline{\bf~ n=2~}}[/tex]
