Răspuns :
Răspuns:
0,(4)=4/9
4,(2)=(42-4)/9=38/9
[0,(4)+4,(2)]・9=(4/9+38/9)·9=42/9·9=42
[tex]\it (\dfrac{4}{9}+4\dfrac{2}{9})\cdot9=\dfrac{42}{9}\cdot9=42[/tex]
Răspuns:
0,(4)=4/9
4,(2)=(42-4)/9=38/9
[0,(4)+4,(2)]・9=(4/9+38/9)·9=42/9·9=42
[tex]\it (\dfrac{4}{9}+4\dfrac{2}{9})\cdot9=\dfrac{42}{9}\cdot9=42[/tex]