Welcome to Westonci.ca, the place where your questions find answers from a community of knowledgeable experts. Get immediate and reliable answers to your questions from a community of experienced professionals on our platform. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

Write each repeating decimal as a fraction in simplest form:
1. 0.21 repeating


Sagot :

0.21212121212121212121...=7/33.

How did I find this out?

n=0.212121212121...

100n=21.212121212121...

100n-n=99n=21

Therefore n=21/99=7/33