Answer:

Explanation:
Given
0.77......
We require 2 equations with the repeating part after the decimal point.
let x = 0.77.... (1) ← multiply both sides by 10
10x = 7.77.... (2)
Subtract (1) from (2) thus eliminating the repeating decimal
9x = 7 ( divide both sides by 9 )
x =
