38/9 yes, but it could also be 4 2/9 if you like to simplify things.
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Oh honey, 4.2 repeating is just 4 and 2/3. It's like trying to catch a greased pig - it just keeps slipping away but eventually you'll grab hold of it. So, there you have it, 4.2 repeating as a fraction is 4 and 2/3.
Oh, dude, you want to know what 4.2 repeating is as a fraction? Well, technically, it's 4.2 with a line above the 2 to indicate it repeats. So, if you want to be all formal about it, that's 4 2/9. But hey, who's counting, right?
The fraction for .4 repeating is 2/5.
If all 3 digits are repeating then as a fraction it is 215/999
0.23809523809 = 23809523809/100000000000. Simple!
It is: 82/99 = 0.828282.....repeating
It is: 2/15 as a fraction