Răspuns :
[tex]\text{Se trsnsforma ambele fractii zecimale in fractii ordinare.} \\ \text{Se inmultesc, apoi rezultatul se poate transformain fractie zecimala.} \\ \displaystyle \\ Sa~calculam~exemplul~tau: \\ \\ 2,(3) \times 0,3 = \frac{23-2}{9} \times \frac{3}{10} = \frac{21}{9} \times \frac{3}{10} =\frac{7}{3} \times \frac{3}{10} =\boxed{\frac{7}{10}} = \boxed{0,7}[/tex]
* transformam numerele in acelasi forma ...
2,(3) = 2 intregi si 3/9 = 2 intregi si 1/3 = 7/3 ;
0,3 = 3/10 ;
**efectuam inmutirea ...
[tex]\frac{7}{\not3_1}\cdot\frac{\not3\,^1}{10}=\frac{7\cdot1}{1\cdot10}=7/10=0,7[/tex]
2,(3) = 2 intregi si 3/9 = 2 intregi si 1/3 = 7/3 ;
0,3 = 3/10 ;
**efectuam inmutirea ...
[tex]\frac{7}{\not3_1}\cdot\frac{\not3\,^1}{10}=\frac{7\cdot1}{1\cdot10}=7/10=0,7[/tex]