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Question Number 189350 by 073 last updated on 15/Mar/23

Answered by Rasheed.Sindhi last updated on 15/Mar/23

$$0.7\bar{9}=y\left(say\right)$$$$100y=79.\bar{9}$$$$10y=7.\bar{9}$$$$100y-10y=72$$$$y=\frac{72}{90}=\frac{4}{5}$$$$y.x=\left(\frac{4}{5}\times x\right)\in {\mathbb{Z}}^{+}$$$$x=5,10,15,...$$$$Min\left(x\right)=5$$

Commented by 073 last updated on 15/Mar/23

$$\mathrm{nice}\mathrm{solution}$$

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