Answer:
12
Beth has read 12 books.
Explanation:
2/3 of 18 is
2/3 × 18
= 2/3 × 18/1
= 36/3
= 12
or "cancel" the 3 and 18 so the work looks more like:
2/3 × 18
= 2/1 × 6
= 12
Or skip the fraction math and logic it out. 18 in three parts is 6books, 6books and 6books.
Beth has read 2 parts:
6books and 6books
She read 12 books.