Question

question = 0.6(under bar)​

Answer 1

$= > x = 0.6666...... \\ = > 10x = 6.6666....... \\ = > 10x = 6 + x \\ = > 10x - x = 6 \\ = > 9x = 6 \\ = > x = \frac{6}{9} \\ = > \boxed{x = \frac{2}{3} }$