Question

[Vũ Hải Lâm]

Cho \(\hept{\begin{cases}0,\left(3\right).3=0,\left(9\right)\\\frac{1}{3}.3=1\end{cases}}\)CMR:0,(9)=1 với \(\frac{1}{3}=0,\left(3\right)\)

Answer 1

[đàm anh quân lê]

Vì \(\frac{1}{3}=0.\left(3\right)\)

\(\Rightarrow\frac{1}{3}.3=0.\left(9\right)\)

\(\Rightarrow1=0.\left(9\right)\)(Đpcm)