Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: Prevalence In the United States, according to Business magazine, an estimated 15 million functionally illiterate adults held jobs at the beginning of the 21st century.

Business magazine says, around 15 million illiterate adults had jobs at the start of the year 2000 .