Evaluate: 1 - (2/5 + 1/6). Here the LCD is 30. Find:
30 12 5
---- - ------- - ------- = 13/30 of the book has not yet been read.
30 30 30
Add 2/5 and 1/6 and then subtract the sum from 1.
2/5 + 1/6 = 12/30 + 5/30 = 17/30
She read 17/30 of the book.
1 - 17/30 = 30/30 - 17/30 = 13/30
13/30 of the book is left.
Answer: 13/30
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