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DeAndre and Curtis are roommates. Together they have one hundred forty books. If DeAndre has 50 books, how many does Curtis have?

Write an algebraic equation that represents the situation, use `x` for your variable.  

Curtis has books.


X
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   x  x    n  |   | (   ) π DNE
   x    (   ) π DNE
( ) ( ] [ ) [ ] —∞ DNE
< > or All Real Numbers DNE
log logn ln n  | | e 
sin cos tan arcsin arccos arctan  
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