Question 22793
Here's how you do these: To convert repeating decimals to an equivalent fraction, isolate the repeating group as an integer, in this case, the repeating group is .13, using the following technique:

Let:
n = 0.131313...Now multiply n by 100 to isolate the repeating group of .13
100n = 13.131313... Subtract n from 100n = 99n.

99n = 13.131313 -0.131313 = 13

So, 99n = 13 Divide both sides by 99
n = 13/99 but n is 0.131313...

So, 0.131313... = 13/99 Check this out on your calculator.