Let the fraction be x.
Then x = 0.1555...
As one digit repeats multiply both sides by 10 to give:
10x = 1.555...
Now subtract the value of x from both sides:
→ 10x - x = 1.555... - 0.1555...
→ 9x = 1.4
Multiply both sides by 10 to remove the decimal point from the right hand side, and find the value of x as a fraction:
→ 90x = 14
→ x = 14/90 = 7/45
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If you mean: 0.151515.....repeating then as a fraction it is 5/33
0.050505 repeating written as a fraction is 5/99
If all three digits are repeating then as a fraction it is 7/37 in its simplest form
5/6
It is: 5/3