Question

Write the number o.21212121... as a fraction

Answer 1

`(0.21212121...)/(1)`

Answer 2

X = 20/99

Step-by-step explanation:

Let X = 0.21212121

Multiple both sides by 100

100X = 21.212121

Substrate X from both sides

100X - X = 21.212121 - 0.21212121

99X = 21

X = 21/99