Answer:
![(1)/(9)](https://img.qammunity.org/2021/formulas/mathematics/high-school/6au3zv2793g0c8whm6mxr8pgf1mvm6r80d.png)
Explanation:
Create 2 equations with the repeating part after the decimal point. Then by subtracting the repeating part is eliminated
let x = 0.1111.... → (1) ← multiply both sides by 10
10x = 1.1111.... → (2)
Subtract (1) from (2) eliminating the repeater, that is
9x = 1 ( divide both sides by 9 )
x =
![(1)/(9)](https://img.qammunity.org/2021/formulas/mathematics/high-school/6au3zv2793g0c8whm6mxr8pgf1mvm6r80d.png)
That is
0.111111... =
![(1)/(9)](https://img.qammunity.org/2021/formulas/mathematics/high-school/6au3zv2793g0c8whm6mxr8pgf1mvm6r80d.png)