Answer: He has 7 books.
Step-by-step explanation:
9 - 2 = 7
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▹ Answer
<em>d. 7/20</em>
▹ Step-by-Step Explanation

Hope this helps!
CloutAnswers ❁
Brainliest is greatly appreciated!
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I think is c I'm sorry if is wrong
So, Angelique took away a a number from the two numbers and did not replace it with the correct number. So, this should be 1-51=50. Hope I helped! :)