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The sum of two numbers is 8.  One of the numbers is four less than the other. Find the numbers.

Enter your answer as a list of numbers separated by a comma: a,b


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  
[more..]